Without a doubt's favorite cloud storage provider, offers ease of use, speed and security at a reasonable price. It also has a nice free plan you can use to test it, and comes out of the box with zero-knowledge encryption included. Read all the details in our full review.

By Ben Stockton
— Last Updated:
Starts from $ 500 per month for 200 GB
Free plan available (All Plans)

There are plenty of good cloud storage providers out there, but we’re willing to declare only one as the best cloud storage, and that’s In an increasingly competitive market, where big names like Google and Apple dominate, provides an almost complete experience for cloud storage users.

There are plenty of reasons why, too. comes with great security out of the box, with end-to-end encryption across all of its plans. Syncing is a breeze, and you have a great deal of control over any files you share with others. All of this comes with competitive pricing that most other providers struggle to match. However, that doesn’t mean is perfect — nothing in life is.

It’s poor for collaboration, as you’d expect from a security-focused service, so don’t expect built-in Office integration. Minor quibbles aside, there’s plenty to love about this provider that explains why it’s a frequent recommendation among our other cloud storage comparisons, as this review will explain. Video Review

Strengths & Weaknesses


  • Excellent security
  • Competitive pricing
  • Unlimited file sizes
  • 365-day versioning
  • Clear privacy policy


  • No monthly payments
  • User interface needs work
  • Slower sync speeds

Alternatives for

  1. 1
    • Sync Folder
    • File Link Sharing
    • Folder Sharing
    • Versioning
    5 GB - 10 TB
    $ 500
  2. 2
    • Sync Folder
    • File Link Sharing
    • Folder Sharing
    • Versioning
    10-2000 GB
    $ 399
    Save 20 %
  3. 3
    • Sync Folder
    • File Link Sharing
    • Folder Sharing
    • Versioning
    15 GB - 30 TB
    $ 167
    Save 16 %
  4. 4
    • Sync Folder
    • File Link Sharing
    • Folder Sharing
    • Versioning
    1000 GB
    $ 1200
  5. 5
    • Sync Folder
    • File Link Sharing
    • Folder Sharing
    • Versioning
    15 GB - 16 TB
    $ 539


85 % – Very Good has an approach to features that balances file and folder security with the desire to offer the features you’d expect from a top-tier provider.

To begin with, is a zero-knowledge provider, meaning the control of your data is in your hands. You manage your encryption keys, meaning it doesn’t matter if, the law or a rogue hacker sees your files — only you can decrypt and access your data.

This limits the kind of third-party integrations you’ll see with competitors like Dropbox. You can learn more about this in our vs Dropbox comparison review.

It isn’t the best cloud storage for collaboration, but if you accept the limitations, does have a few built-in features worth talking about for documents. If you have a premium subscription, you can view Office and PDF documents, as well as images. The decryption is on the fly, so it may be a little slow, but that’s the price you pay for security.

sync-versionhistory Versioning

If you’re a project manager or document editor, or if you’ve been hit by ransomware, you might find comfort in’s file versioning features. It automatically stores previous versions of any files that you change, as well as any deleted files, and these don’t count toward your storage quota. 

In fact, is our top recommendation as the best cloud storage for versioning, with 30 days of file versioning available for free account holders. Meanwhile, Pro Solo Basic account holders gain 180 days, while all other accounts can roll back their files for up to a year. offers this on a file-by-file basis, rather than by offering a full account rewind like you’ll see offered by providers, such as pCloud, which can restore accounts to a previous stage with its pCloud “rewind” feature. You can read more about this in our pCloud review, or see how these two services compare in our pCloud vs matchup. 


Although doesn’t offer a full account rewind, you can restore entire folders at once. If you need to attempt a wider recovery, you can contact directly to get help with restoring larger sets of files. It’s good that it offers this level of customer support (we’ll talk more about this later), but this would be better as a built-in feature.

File Size Limit

If you’re worried about file or folder sizes, has you covered. It has absolutely no limit on your file sizes — none. Compare that to Google Drive or Microsoft OneDrive, which has 5TB or 100GB file limits, respectively. Unlimited file size for uploads is one of the reasons why is our top choice for the best cloud storage for large files, as you might expect.


You can also create a cold storage vault for your folders using a feature called “sync vault.” This will lock certain files away, preventing them from syncing across your devices, and it’s something we’ll talk about later. Features Overview

  • Sync

    • Sync Folder
    • Block-Level Sync
    • Selective Sync
    • Bandwidth management
    • Sync Any Folder
  • File Sharing

    • File Link Sharing
    • Link Passwords
    • Link Expiry Dates
    • Folder Sharing
    • Folder Permissions
    • Link Download Limits
    • Upload Links
  • Productivity

    • File Previews
    • Edit Files
    • In-App Collaboration
    • Office Online
    • Google Docs
    • Notes App
    • Media Playback
    • Mobile Apps
    • Deleted File Retention
    • Versioning
    • WebDAV
  • Security

    • At-Rest Encryption
    • In-Transit Encryption
    • AES 256-bit Encryption Protocol
    • Zero Knowledge
    • Two-Factor Authentication
    • Canada Server Location
  • Support

    • 24/7 Support
    • Live Chat Support
    • Telephone Support
    • Email Support
    • User Forum
    • Knowledgebase
  • Misc

    • Free Plan


95 % – Excellent is the provider that sets the bar when it comes to pricing, and few competitors in the market can compete with it, although pCloud is one of the few that does. Like for like, is more affordable than most, with plenty of plans for consumers and teams alike.

  • Free Details
  • 5 GB Storage
Personal Mini
  • 200 GB Storage
1-year plan $ 5.00/ month
$60.00 billed every year
Pro Solo Basic
  • 2000 GB Storage
1-year plan $ 8.00/ month
$96.00 billed every year
Pro Solo Standard
  • 3000 GB Storage
1-year plan $ 10.00/ month
$120.00 billed every year
Pro Solo Plus
  • 4000 GB Storage
1-year plan $ 15.00/ month
$180.00 billed every year
Pro Teams Standard
  • Price per user Details
  • 1000 GB Storage
1-year plan $ 5.00/ month
$60.00 billed every year
Pro Teams Plus
  • Price per user Details
  • 4000 GB Storage
1-year plan $ 8.00/ month
$96.00 billed every year
Pro Teams Advanced
  • Price per user Details
  • 10000 GB Storage
1-year plan $ 15.00/ month
$180.00 billed every year

You can start out with a free account, which gives you 5GB of space with no strings attached. This isn’t as generous as other big providers, like MEGA, but with zero-knowledge encryption included, it’s still a good option, putting onto our best free cloud storage shortlist.

If 5GB isn’t enough, you can earn another 1GB of space by sharing files or installing the mobile app. You can take things even further, adding up to 20GB extra by referring new users to the company. Pricing has plenty of paid plans, too. Four personal plans are available, but annoyingly, there are no monthly plans. You’ll have to pay for 12 months upfront, which could be a bother. 

Personal Mini is the starter plan at $5 per month, and it offers 200GB of space and 60-day file recovery with 200GB of transfer data each month. Pro Solo Basic costs $8 per month and offers 2TB of storage, 180-day file recovery and unlimited transfers.

Further up the chain, the Pro Solo Standard annual plan is currently on offer for just $10 each month, with 3TB of storage space, 365-day file recovery and unlimited transfers. The highest tier is Pro Solo Plus, working out to be $15 each month with 4TB of storage space and 365-day file recovery with unlimited transfers.

If you’re a business user, you can take advantage of three other plans for business users. Pro Teams Standard gives 1TB of storage per user for up to 100 users and costs $5 per user per month (paid annually). Pro Teams Plus gives 4TB per user for up to 100 users and works out to be $8 per user every month.

At the top is Pro Teams Advanced, offering 10TB per user for $15 per user per month, and with a whopping 1,000-user limit for your account. All three business plans require a minimum of two users per account and come with 365-day file history and recovery. Read our Business review.

Ease of Use

75 % – Good

If a product isn’t easy to use, it isn’t likely to be successful. is reasonably user-friendly, but there is definitely room for improvement in some areas. This is particularly true when it comes to moving files and folders around, as we’ll explain further down.


Getting started with is simple enough; signing up requires only an email address and a secure password. You can then install a desktop app, with options for Windows and macOS users, but Linux support is lacking, sadly. Linux support is on the roadmap for the future, but for now you’ll need to check our best cloud storage for Linux for alternatives.

Once the app is installed, your files are held within a folder called “sync” on your drive. Files saved here are automatically synced to your account, which matches files stored online, unless you’re using selective sync to restrict certain files, which is something we’ll talk about later.

sync-folder treads the familiar path that Dropbox and others created: there’s a sync folder, controlled by a system tray icon that allows you to control your storage and settings. Clicking the system tray icon brings up your most recent files, including your “sync vault” cold storage files. From the panel that appears, you can also access your web panel, sync backup folder and settings.


The settings control panel has five tabs. The “options” tab allows you to change basic settings, such as desktop notifications. The “account” tab lets you change your password. You can view your network settings and current uploads or downloads under the “network” and “progress” tabs, respectively. 


The web panel has more menus that allow you to view your files, both private and shared. The “file” view, as the name suggests, gives you a full list of your saved files, while “vault” lets you view and control your “sync vault” cold storage files.

If you’re sharing files, you can view and change access to them under the “sharing” tab, which shows a list of team shares and shared-file links. You can also view previous sign-ins and the account history under the “events” tab. Finally, you can add other users to your account (especially for business users) under the “users” tab.

Each file and folder saved in your storage can be further modified by pressing the three-dots icon, which gives you controls over file sharing, downloading, deleting and moving your files, as well as accessing the relevant file versioning history for that file or folder. It isn’t possible to drag around files or folders, either; you’ll need to move them through this menu.

Other providers, such as OneDrive, allow you to move files by dragging and dropping them into folders within the web application, which is arguably much simpler and easier to understand. You can learn more about this in our OneDrive review.


Dragging files into the web panel is similarly frustrating. You can’t drag and drop onto subfolders, and you’ll need to have the folder visibly open before you drop the file in. You also can’t drag a file out of the web panel to download it to your desktop; you’ll need to open the menu and choose the download option to do so. Mobile Apps

You can use your storage on the go, with mobile apps available on Android and iOS. The apps are similar to the web panel, where you can view your files, access your cold storage vault, manage shared links and see your recent files. There’s also the option to turn on automatic uploads of your photos and videos to backup your files on the go.


The apps are fairly user-friendly, but have the same issue as the web panel; you can’t drag files and folders around, but instead have to move things using the menus. 

Other apps do this much better, such as the Google Drive app, which lets you drag a file into a folder without any issue. It’s also why Google’s mobile apps make Google Drive one of the best cloud storage for Android.

File Sharing & Syncing

90 % – Excellent

File syncing and sharing are ultimately what any cloud storage solution will be judged on. has some good syncing features, but its file-sharing features are where it truly shines, hitting the top of our best cloud storage for sharing shortlist.

You can sync files by adding them to your folder, or you can upload them manually using the web panel or mobile app. By default, files in this folder are synced to your account. You can’t add additional folders on your PC, like you can with pCloud and other providers. Instead, everything has to be saved in this folder for it to be synced.


If there’s a lot of data in your account, you might worry about disk space usage. Thankfully, there are a few tricks you can use to reduce the impact on your drive. Selective sync allows you to store online files in certain folders without syncing them to your PC, saving you space in the process.

These preferences are device-specific, so you could keep your photos accessible on your desktop, but stop them from taking up space on your laptop. 

If there are files and folders that you don’t want to sync to any of your devices, then you can drop them into your “sync vault” folder instead. As we’ve mentioned, this is a cold-storage vault that stays online; it isn’t synced to your devices at all.

The “sync vault” is ideal for backups or freeing up space on your hard drive or your phone. For example, you could move all of your photos and videos from your phone into the vault. You could then delete them from your phone to free up space, but you’ll still be able to access them from the mobile app. 

It’s a nice feature, but as you’ll see in our best cloud storage for sync shortlist, it isn’t enough to beat similar — and better — features from Dropbox or Egnyte. As we’ve mentioned, though, sharing is where shines, and thankfully it’s a simple process.

Sharing on Mobile

In both the mobile and web apps, tap the three-dots icon to create a sharing link. The web app also offers a quick-sharing link in a pop-up, which appears whenever you hover over a file or folder in your drive. Desktop users can instead right-click and press “share sync link” to create a sharing link.


Once a link has been generated, you can send it directly from using email, or copy the link to send to friends and family through any other medium. gives you a fantastic range of features when it comes to sharing links. You can add a password, disable downloads and set download limits and expiration dates, after which the link is no longer active.

However, the majority of these features are for paid accounts only; with the free account, you can only set a password. users who pay can also set up email notifications to alert them whenever a link is downloaded or viewed. This information is also accessible in the “events” menu.


Security is a focus, so you can also send links with encryption applied, making it a great option for secure storage that you can share with friends and family. 

Enhanced security links don’t work in some situations, though, including with older browsers, in Safari on iOS or with files that are more than 500MB. However, enhanced privacy is available for free account holders.

You can also create team folders that allow you to share your files and folders with specific users, granting them access to view, read or edit any files held within. You can manage your team shares from the web panel, with the ability to remove users or remotely wipe the folder from any user accounts that you restrict in the future.


60 % – Fair

End-to-end encryption has an impact on the performance of file uploads and downloads using The company values the benefits of security over the download and upload speeds. For that reason — as we see below — uploading and downloading a 1GB file using took much longer than it might with other providers. acknowledges that you may see some slowdown when uploading files that are larger than 40GB, and it recommends uploading via the desktop app for any file that’s larger than 5GB.

 First attempt:Second attempt:Average:
Upload time37:5539:4338:13
Download time16:0116:4516:23

Using a connection with 80 Mbps download speeds and 6 Mbps upload speeds, uploading the 1GB file took around 38 minutes, on average. This is much longer than it took with pCloud, which doesn’t use end-to-end encryption by default. Downloads also took longer, with an average of around 16 minutes.

If you’re looking for blazing speed, then we’ll admit that there are definitely stronger options out there. That said, encrypting and decrypting large files is bound to be more time consuming. If you’re syncing smaller files, you shouldn’t notice a huge difference in sync speed.

A provider like pCloud can offer much faster upload and download speeds for larger files, but the trade-off is that these files aren’t encrypted by default. doesn’t use block-level sync, either, unlike other big names like Dropbox or pCloud. Block-level sync splits your files into pieces and only the parts that change are synced, making uploads quicker. However, points out that block-level sync isn’t possible with the service because it would require access to your files.


100 % – Excellent’s speed issues, as we’ve mentioned, are due in part to zero-knowledge encryption. Although this slows things down a little, it also makes an incredibly secure service to store files online. In fact, comes out at the very top of our rundown of the most secure cloud storage

With zero-knowledge encryption in place, your data is encrypted and stored on’s servers, without any other access to it. offers zero-knowledge encryption across all of its plans, including its free plan, which helps it to come out at the top of our best zero-knowledge cloud storage shortlist.

Many providers that use zero-knowledge encryption are unable to reset a lost password, so if you lose it, the files are gone forever. has a few workarounds to help solve this problem, though.

Password Reset

If you have the desktop app installed, you can reset your password directly from the app itself. This changes your password locally, so your encrypted files remain completely secure. There’s also an option to enable email-based password recovery, giving you the option to reset your password using your account email. does have access to your password while this feature is enabled, although it states that your encryption keys are available only to’s automated system.


Although enabling this feature may be convenient, it reduces the strength of the security protecting your files. A better solution is to keep this feature disabled (as it is by default) and make use of a password manager like Dashlane to ensure that your password is saved securely. Check out our best password manager shortlist for alternatives.

In addition to zero-knowledge encryption, also offers some other security features. It uses industry-standard AES 256-bit encryption for your data in transit and at rest, and the TLS protocol to protect you from man-in-the-middle attacks. 

You can also set up two-factor authentication to secure your account, which would require you to use a code generated by email or an authentication app to sign in. If someone obtains your password, they will be unable to access your account without the additional code, which offers another layer of protection.


95 % – Excellent

Few technological advancements are better at keeping your data (and your privacy) safe than zero-knowledge encryption, and it’s something that uses across all of its plans.

This means that — or can anyone else — can’t access your files unless they have the decryption key, which you exclusively control; anything you store on its servers is safe, even if the servers become compromised. also has one of the clearest privacy policies that we have seen, rivaled only by Tresorit and a few others.

We’ll admit that, in many cases, the privacy policies used by online servers are just a wall of heavy text, leaving it difficult to decipher what the company can or cannot do.’s privacy policy is laid out very clearly and explains its 10 core privacy principles, from accountability and safeguards to disclosure and retention.

The policy states that won’t disclose your personal information without your consent, except under limited circumstances when the company is forced to comply with a law enforcement request or to protect the personal safety of other people during an emergency. It will log IP addresses and access times, but this data is not specifically linked to you. is based in Ontario. Canada isn’t on our best cloud privacy laws shortlist, but it’s certainly a lot better than its neighbor to the south. Your data will fall under the Personal Information Protection and Electronic Documents Act (PIPEDA), which is designed to protect your personal information. 

If you’re based in Europe, also complies with the much stricter GDPR regulations

Customer Service

85 % – Very Good

If you have an issue with your cloud storage service, you’ll want to know that you can find a solution to the problem quickly (or at least smoothly). has a reasonable level of customer service with good response times, but it does lack some options, such as live chat. has a very useful help center that covers everything from setting up your account to creating shared folders. The information is very well presented, with articles covering specific topics, each broken down into a set of FAQs for you to quickly scan through. These articles are thorough and should cover the most common queries.


If you’re unable to find the answer you want, then the only option for contacting support is by using an online form. You can access it through the website or by pressing the “help” button in the web panel. In our experience, we received responses in less than an hour and the content of the responses was very helpful, but a live chat would speed things up.

There’s no community forum for, so you can’t gain help from other users, which is something we’ve seen deployed well by other providers, such as Dropbox. These communities allow you to search for solutions or ask your own questions and make use of the expertise of other users. It’s a shame that doesn’t offer it here.

The Verdict

If you’re looking for a cloud storage solution that keeps your data secure and private, then won’t leave you disappointed. It offers zero-knowledge encryption as standard and, unlike most services that do, you won’t be locked out of your account forever if you lose your password. 

However, that powerful encryption does come at a cost. The service lacks useful third-party integrations, limiting its potential as a collaborative tool for teams, even with shared and team folders available. It also suffers from somewhat slower upload and download speeds, particularly for large files.

That said, is willing to admit many of these points upfront in its FAQs, which is a refreshing dose of transparency. Syncing with the service is simple and effective, and you have powerful control over any shared links you create. It’s also one of the best value cloud services we’ve seen, with prices that rival many of its competitors.

If you want to give it a trial run, there’s a fairly generous free plan that includes many of its paid features, including end-to-end encryption. Taking the package as a whole, is one of the best cloud storage services available, with only providers like pCloud rivaling it on features, speed or security. 

Have you tried What has your experience been like? Let us know in the comments below, and as always, thanks for reading.


  • What Is is a super secure cloud storage service that protects your files while in the cloud, leaving your hard drive free of clutter.

  • Is Really Secure?

    Yes, absolutely: even if you look beyond the advertising featuring encryption and the like, never has there been a breach of the servers nor have we heard of any other irregularities.

  • Where Does Keep Data?'s servers are located in Canada, in Toronto and Scarborough, Ontario.

  • How Does Make Money?

    From subscribers signing up to the service. The free plan is more of a taster than anything.

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95 thoughts on “”

  1. Really fast syncing and secure file sharing. I have tested the performance from multiple cities in the US, Europe and Asia and it remains consistently fast. Love the unlimited file revisions feature in my Sync 2TB Pro account. Great pricing.

    1. Thanks, we’ll add that more visibly to our review. At the bottom there is a features overview where you can review the OS’s supported.

  2. To be fair, slow upload and download speeds are NOT due to encryption. Technically, the speed of encrypting and deencrypting the data depends entirely on your machine specs because that’s where it’s happening. But most modern machines can encrypt data much faster than they can upload it, even at 20Mbps. For example, large block 256-bit AES/CBC encryption should easily exceed 80MBps, which is 32x faster than your internet connection. At that rate, some hard drives might not even keep up with encryption.

    In the end you uploaded at around 22Mbps and downloaded around 14Mbps. I don’t know why the download was slower but it was not due to deencryption. From what you’ve stated, something is also broken with their preview, but I highly doubt it has anything to do with encryption. It’s more likely something to do with the code (maybe JS) they’re using in the browser.

  3. if a share is created by a PRO account, free accounts wont be charged for disk usage. the feature was added a couple of months ago. however i don’t think the feature was applied to old shares retroactively

  4. I just tried to set up sync and for some reason it did not recognize the password I set up. So, I tried to change it. The “forgot password” link only sends you a hint. In order to change a pw you must be in one of the apps or your desktop app to change. Sync has no feature to change the pw from the page. YIKES!! Moving on to vet a new cloud for my COPY replacement. If support is amazing, I will update this review. Yes, I had to write support to get a password reset……….

    1. I imagine that’s because it’s using blind encryption, so only your local machines would have the decryption key.

  5. I was an early adopter when was early beta — opened a free account in 2013, and bought a Pro account in Jan 2014.

    I *love* It works completely seamlessly on all my machines (I switch between three laptops, a desktop, two tablets, and a phone). Working files are always synced immediately on starting up, so I can stop working on something at one location, and pick up where I left off on a different machine later. Total security and privacy… what’s not to love? I have also received outstanding customer service on the few occasions when I’ve needed something. Really, an outstanding value. Makes DropBox look old, lame and leaky.

    1. Hi,
      you can – sort of. You can download the movies and then play them back, however, streaming doesn’t seem to be possible.

      1. Thanks, I think I overestimated need to back up movies. They are all in iTunes and a couple externals. Looking at backing up my main files under User on my MacBook Pro instead. Didn’t like BackBlazes metadata and restore issues.

  6. I am on Linux and have been using Sync for over half a year now and I love it!

    As there is no desktop client for Linux I am using the web interface which is working fine. I have inquired if they are working on a Linux desktop version, but they replied they have to get more requests in order to do so….

    Please drop them an email if this is something you would want to be seen developed as well. I think this service would be of great interest to the Linux community.

  7. Love Sync!
    Hadn’t heard about them until I stumbled on this review. Overall service is amazing and fast.

  8. I have 250 files in my sync folder and I cannot find a file search tool on the android app? Does one exist? Or is there a way to make the files visible to android file search apps?
    Apart from this one little issue I am a very happy new user.

  9. Well to me it’s quite useful and fast, in fact I am planning to start using it instead of Dropbox.
    I really like the fact that it’s encrypted (unlike DP!!!!) and really keeps your privacy in tact, bye bye NSA!!

    I will use this for now.

    Have a good day!

  10. I am trying out sync for the first time. I am having issues with the files that was transferred to the local folder of the sync desktop application, and when I compared the files uploaded to sync versus the files from my computer, some items are missing. Help please. Thanks!

  11. I have installed the Windows version of the Sync app on a WindowsXP system, because Dropbox is about to stop working on WindowsXP. Is there any commitment from Sync that they will continue to support XP?

  12. Now they offer Password recovery without end to end encryption. How does this fit with the zero knowledge model? I like the service, but they should not break the security model. Ok it is optional in the security section, but the possibility to break zero knowledge is what is different to competitors like tresorit or spideroak. Again, i like them, but have to think about it after this move.

    1. Maxwell here from Sync.

      Sync is completely zero-knowledge by default, and your encryption keys are only accessible by you. We provide a technical summary of our zero-knowledge implementation here:

      With regards to password recovery:

      Password recovery is a great example of how Sync does “zero knowledge first”. By default, if you forget your password, your account and all of your data in the cloud is lost forever. There’s no recourse here (unless you have a desktop app installed, which provides local password reset options).

      Password recovery is NOT enabled or even available by default, and technically this feature can only be enabled locally (via the web app, where source code is available). It cannot be enabled server-side (eg. we can’t flip a switch) and it has to be enabled before you forget your password (it cannot be enabled if you’ve already forgotten your password).

      User choice is important, and we believe that as long as we are transparent about it, we can make Sync open and accessible to all users, and ensure that by default, Sync is always 100% zero-knowledge.

      I hope that provides some insight, and feel free to contact us directly here: if you’d like to chat further.

  13. Maxwell here from Sync,

    We totally agree with your comment and Max’s comment above as well.

    By default Sync is completely zero-knowledge. We don’t have access to your encryption keys, and we don’t store or transmit your password, ever. Your encryption keys are generated locally (either within the web app, which runs locally within your web browser, or the desktop apps), and your files are encrypted and decrypted locally using these keys.

    We don’t have access to your keys, because they are locked with your password (which is never transmitted or stored). For a technical summary of our zero-knowledge implementation click here:

    With regards to password recovery:

    By default there is no way for you, as a Sync user, to recover your password. If you forget your password, your account and all of your data in the cloud is lost forever. While this is exactly what you and I want, the consequences of losing a password are not always an option for everyone. As such we provide an optional password recovery mechanism.

    Password recovery is NOT enabled or even available by default, and technically this feature can only be enabled locally (via the web app, where source code is available). It cannot be enabled server-side (eg. we can’t flip a switch) and it has to be enabled before you forget your password (it cannot be enabled after the fact).

    I hope that provides some insight, and feel free to contact us directly here: if you’d like to chat further.

    We absolutely love hearing from users like you, users who value their privacy in the cloud. That’s what Sync is all about.

      1. Hi Maxwell,
        Will you be able to delete my photos at any time? although I use the free service

  14. Hi Maxwell,
    What about support for Linux, is there any plans for including client app for Linux?

      1. I would love to see a Linux client as well because Linux is gaining in popularity.

        I installed Windows 10 on one of my machines but Linux is way better in my opinion and a Linux client should be available. Add me as a beta tester 😀

        1. Sync would be great for me, but only when it supports Linux. I only use Linux at home, and Android. I’m seen as the expert amongst my family and friends and they ask what I use, not so much why.
          Is there an ETA yet for a least a Linux sync daemon even if there’s no actual desktop application?

          1. Well, you wouldn’t have automatic syncing, but you could still manually upload to Sync using the web app, it’s what I do.

  15. I am a user of Sync and can say that I am, so far, very happy with the service. It isn’t entirely flawless/seamless and there is always room for continued improvement and modification, but all-in-all, I definitely view (and use) it as a secure alternative to other services. Of course, this is all predicated on the assumption that the platform is as secure as the company says it is, without any fatal flaws, holes, backdoors, etc.

    Having used Sync for a while though, my biggest concern is that the company doesn’t seem to be engaged in much of (if any) updating to its desktop and mobile apps (and there are clearly a number things that can/need to still be implemented/tweaked). I assume this is a business decision based on available resources (e.g., cashflow and/or staff and manpower), but if that is the case, then it raises some other potential concerns as well–namely, the long-term sustainability of Sync. Please do not misunderstand, without concrete information, I have no way of knowing if this is the case or not, but I do know that thriving entities would seek to constantly push out improvements and updates, and yet we just haven’t seen this from the company for months/a year+. This is definitely something users notice, especially given how many cloud storage companies we’ve all seen come and go at this point.

    For what it is currently, Sync is a good if not great service; however, based on a colossal lack of communication and updates from the company, it’s not without some concern as to where the long-term direction of the company lies and if it will actually be able to get there.

    1. Agreed, this is my main worry for now. Especially since there’s a major bug in the mobile app where it keeps uploading files even though i set it to only upload when wifi is available. Totally burst my data cap and i had to uninstall the app.

      The lack of communication or updates from the company doesn’t give us much confidence either. Makes me wonder whether they’re about to go bust all of a sudden.

  16. Hi I’m a free Sync user at the moment but really on the way to turn Pro with a 2TB offer. I like the service, but what is still preventing me from going Pro and fully replace my Dropbox account is the lack of a desktop Linux app. Hope the roadmap to it will be shorten. Thank you

  17. Hi.
    It needs to be that way and that is normal behaviour for cloud storage: A shared folder/file counts as used space on all accounts that it’s shared with. The reason is because if they didn’t do that, then anyone could open up multiple free accounts, share the folders between all accounts, and get huge amounts of free storage that way. That wouldn’t be fair to the cloud host company.

    Not great, but they don’t seem to have much choice.

  18. Im in Australia if anybody is interested, I’ve just recently switched from Google Drive to Sync. All i can say is that it works Great, I’m really happy with the service. I emailed customer support twice with some detailed questions about the company, i got some excellent replies back, and was really surprised with how professional they were about it.

    You all need to remember this is a VERY VERY new company, this will only keep getting better and better, they need improvements in certain area’s, but they are listening to customers requests.

    One thing they have said is they are completely re-designing the mobile apps from the beginning, which is good to hear!!

    I can see this cloud service really succeeding, I’m impressed so far. Uploaded 200GB to the service on the 500GB pro plan, upload & download speeds were constant. Very Happy

    1. Hi! I am switching from Google Drive to Sync. How did you transfer your pictures from Google Drive to Sync? Di you have to download all of them and then upload them in Sync? or there is another way to do it?


      1. Hi Arianna. There are two simple-ish options open: one is to indeed download everything from GDrive and then upload it to It’s free and easy, though time consuming. The other option is to check out our article here Not always free, but those tools let you transfer between clouds, so to speak. Good luck!

        1. Except for one little problem that my bossman overlooked: Multcloud and none of the other services support The issue is that is just too locked down, which is a blessing (for user privacy) and a curse (for convenience). The main issue is no API and no WebDAV support. Basically, you’ll need to stick to the first option: install both sync folders on your computer and copy everything from one to the other. It’s possible zipping folders might speed things up, but I’m not sure that’s true. If you’re up for a little work, the move is well worth the effort, IMO.

  19. Just wanted to share a Support experience with Sync.

    I (currently) have a free account. I messed up my 2FA access and needed help to sort it. Sync responded in approximately 10 minutes!

    That is some Customer service.

    For the record, I have no connection with the company other than being a user of its services.

  20. Cheap, great features (zero knowledge is really cool), unfortunately quite slow (both at home and from work, maximum 2MB/s often far less, from Europe). I have taken the 2TB package and will look how many weeks it’ll take to upload the files… 😉 I hope the speed will be sufficient in daily use after the upload. The mobile app doesn’t upload video from the android camera, hope that will be fixed in the future.

  21. Update after a few days.
    I’m really happy; my big files still uploads but aside this Syncs performance is quite well and so I use it now as my primary storage cloud provider (Syncthing manages the android camera backups and the linux client). I’ve seen Sync downloads up to 8MB/s – great, hopefully the uploads will catch this sometime.

    Features needed:
    – More space, hope someday it’ll be possible to buy more than 2 TB space

    Nice to have:
    – Mobile client backups videos too
    – Linux client
    – SMS as 2FA

    Feel saver in the cloud, Sync rulez! 😀

  22. I bought a license for storing all my photos in the cloud. A linux client on short notice would be very nice. Currently I have to run a Windows VM to backup all my stuff.

    Second point is that the Windows App does not allow mapped drives to be used. Only local disks. That means with an organized files server with large disk space I still have to backup all on the VM.

    1. Hi Wim, is working on a Linux client, but I wouldn’t hold my breath if I were you. It’s a real shame, too, but if you want to make use of, I’m afraid you’ll probably have to get used to using the VM. If a Linux client does come out, we’ll be the first to let you know.

      Thank you,

  23. Just a question, I am a photographer. I want to be able to store my photos, in particular my Raw photos off my computer as they take up a lot of storage space. My impression about syncing is that, in essence, it is a mirror of a particular folder is saved online. Therefore the photos still reside on my computer.That doesn’t fit my requirement. Can this program be used just for storage rather that just backing up my folders?

    1. Hi, Othneal, thanks for reading and commenting. It’s a good question. While syncing does work by mirroring files across devices, most cloud storage services offer selective sync, which simply lets you turn sync off for a folder. That way, it’s only stored the cloud, saving space on your computer. In addition to selective sync, also has a “vault” storage feature that works as a cloud-only folder (no syncing). So, those are two approaches you could take.

  24. Is this service considered ITAR compliant?

    Files are end to end encrypted (one of the requirements) BUT are the encryption keys stored on the server, for example? Or is everything derived from my password and left only my system?

    Also, has there been an independent audit of the security?

  25. Could this product be used as a backup destination? I currently use iDrive but would like to have my backups reside in Canada. Does your app allow for any scheduled backups or is it possible to use Cloudberry to accomplish this?

  26. Here’s a BIG CON. Been using Sync around 3 years now. About the 5th time it has totally mucked up and ruined files. This time I’ve lost about 8 hours work to the buggy system and I’ve had enough.

    About 5 days ago I noticed it wasn’t syncing, the icon in the tray had actually gone. Ran Sync, nothing. Uninstalled and re-installed, ran sync, nothing. Contacted support and went through 3 guides they sent me and then a fourth guide was to download their special full uninstaller and reinstall. This involved moving all my current files out of the sync folder, install, put them back, sync runs and re-syncs.

    Now in any normal world, you’d think Sync would see newer files on my machine and update the files on the server that are two weeks out of date…. oh no, not Sync, Sync knows best, let’s rename the files on my machine with “-CONFLICT” and replace all of them with two week old versions!!!

    Luckily for me, I knew it would do this as I’ve been trough this before. I made a backup. After Sync finished ruining my work, I replaced it all with my upto date backup and continued working. Fast forward 20 hours and I’m working the next day. Suddenly a file is missing, I look, it’s gone. There is now a “-CONFLICT” file there from yesterdays version. Huh? This is new!! Oh great, it’s just deleted my new work file, 8 hours lost. I look on the web account, just the CONFLICT version from yeasterday and the two week old version. Oh great…. Sync has sha**ed me royally again.

    Why would software like this DO this? Why replace files dated newer with old files from the server and (if you’re lucky) rename the newer files, or unlucky delete them! FIX YOUR SOFTWARE SYNC.

    1. Same here. I was really scarred when my programs were diverted to an old status of many days ago. New files were not backed up. Instead of that *CONFLICT* files emerged (which were actually my original files.
      This *CONFLICT* files almost ruined my email and business database. They have to fix this problem and stop blaming MS Excel for its autosave feature or similar. It is NORMAL that we are working on the files WHILE synchronization is running, so the Sync program needs to find a way how to upload these files and renaming them is the most stupid solution. Sorry for my language.
      My files are up to 150MB and are still growing. I cannot afford to check for these CONFLICT files constantly.
      Well, at least the support guys were nice and they reimbursed my subscription promptly.
      Looking for a better solution now.

      I don’t understand, how this can be #1 solution. It’s buggy and doesn’t work like it should at all.

      1. Hi Andrej,

        It sucks you’re having trouble with, I hope you find something that works better for you. The reason is no. 1 isn’t because it’s perfect, it’s because in our estimation it works well for most people, most of the time. There are always going to be a few people who, for whatever reason, cannot work with a certain piece of software. Off the top of my head I can’t think of a solution for you, but maybe you could give pCloud a try? Otherwise OneDrive could be an option if you’re working with the Office suite a lot.

        Good luck!

        Kind regards,
        Fergus O’Sullivan, chief editor

  27. How to secure the PC://documents/sync folder besides the basic computer logon?
    Use the windows folder PW???

    Suggested to me to take sensitive data out of encrypted folders (best crypt) to best work with this service
    I do not share/sync with anyone
    The pdf manual does not address this

    1. Hi Mikki,

      In terms of your files on your local computer, you can encrypt your entire harddrive by using the built-in drive encryption features included with Windows or Mac OS.

      For example, on Windows you could enable the Bitlocker feature (or FileVault for Mac). This will ensure the files on your local drive are encrypted, and local drive encryption will always work seamlessly and transparently with Sync’s end-to-end encryption.

  28. I really don’t understand why or how this interface is designed. The first step is to relocate the files/folders that I want backed up? That seems counterintuitive. I have files and folders in the locations where they are on my machine for a reason. I signed up for the free trial, and the first thing I had to do was move a folder into the home/Sync folder? Makes no sense. And everytime I want something backed up, I have to put it in that folder, or manually upload it? I don’t get it – what am I doing wrong?

    1. Hi Dan, you’re doing it wrong. 🙂 isn’t designed for online backup, it’s designed for cloud storage. Online backup tools replicate your files and file system, while cloud storage tools are used to increase your hard drive capacity and sync devices. Yes, you can use cloud storage for backup in a sense, but as you’re finding, it takes quite a bit more work and messes up your organization. We have an article on the difference between online backup and cloud storage that should help, which also has some backup suggestions in it:

  29. Well I’ve spent some time trialling Sync & I won’t be continuing. I have an external drive full of video projects & files that I want to backup.

    Sync is moving anything that I want to upload into the Sync folder & therefore filling up my internal drive. The whole point is that I have an external drive because there is not enough space on my computer!

    Support indicated that I could use the Vault but then it isn’t a backup it’s just moving the files into the Cloud…


  30. I’ve been using Sync for a few years now and love it. Recent updates have made it even better. I was grateful to find a secure cloud storage provider in Canada that is compliant with privacy legislation. I’m glad to see they are getting excellent reviews like this, as that makes me think they will be around long time.

  31. After reading about at Cloudwards I signed up for a free 5GB account, which turned into 6GB once I set it up. Zero-knowledge encryption is the key feature that led me to try

    My experience for the first year was great. I put all of my personal finance spreadsheets and estate planning files in my local Sync folder and I was able to work on them on my desktop or laptop computers and keep everything in perfect sync. I also used my local Sync folder as the shared sync location for my 1Password vault (licensed version, not a subscription account). My 1Password vault sync also worked perfectly.

    After my first year I moved to a paid 500GB account and added all of my general use files, photo, video, and music files to my local Sync folder.

    About a week ago I realized that during a recent file rearrangement I had accidentally deleted two very important files from my local Sync folder. Although I was able to find older versions in my local backup files, I was able to find and download the most recent versions in my web cache. This file recovery experience has really sold me on the benefit of as a well organized, off-site, zero-knowledge file syncing and backup service.

  32. i have had multiple instances where my clients cannot download. The latest one is “Empty files cannot be zipped”, the error message displayed over a folder listing of 81 files, all about 3 megs big. I have given up on and moved to DropBox…a little bit more $$$ and worth every penny of the difference! I can now even see who i have shared folders with… shows you a file or folder was shared, but not who with ????

  33. Sync’s inability to view / stream video files, shared via a link or in the Web Panel is a deal-breaker for me sadly.
    In all other respects the functionality of Sync is excellent.

  34. Sync could be good if it was not so very slow: upload and download are actually capped at 5 MB/s! I have been using it for a couple of years and this is particularly frustrating since I have a 62 down/33 up MB/s (500/270 Mbps) internet connection.

    1. Up- and Download speeds are capped by your computer’s ability to encrypt the files in a timely fashion. If you’re running an old machine that can’t keep up, it’s not Sync’s network speed, but your machine’s ability to encrypt the files that’s the bottleneck.

      1. I am outside CAD/USA and found slow. 6Mbits/sec average upload, 10Mbps average download, on a 12 core machine with 70/35Mbps link.
        If you’re outside USA/CAD, I recommend trying a free account first.

  35. Just decided on after reading the reviews here. My goal was to get great syncing across multiple Macs, improve security and get off a system that uses my private info as advertising fodder.

    I must say, Sync “just works” and works well. In migrating off Google Drive, the move was pretty seamless except for Google Sheets and Docs files. For those I just exported them all to .docx and .xlsx in my Sync folder structure and am back to using MS Office (you could do the same with LibreOffice or Apple Pages etc if you want to) . That was the only part of the process that took time, but I feel better knowing my files are not beholden to Google to open them.

    The auto syncing of photos from my smartphone to a special photo folder is nice too.

    I’d love for them to offer a seamless “family” plan like Microsoft and pCloud. I’d leverage that in a heartbeat.

  36. I’ve had Pro for 2 years now. The single worst feature (or lack of feature) is trying to delete file. First it is “deleted” which just means you can no longer see it. Then comes “purging” the file, and this take FOREVER. So long, in fact, that you will get timed out, logged out, and the folder/file never deleted. So you realistically can only PURGE a few files/folders at time. CHANGE THIS SYNC!

  37. I currently use the free version as I have been testing it out for a few months, so far so good.

    I love how secure everything is, which is going to be great for backing up all my important and very confidential business documents, not to mention personal family photo and video collections.

    I too would love to see a Linux app for this service.

    I would also really like monthly payment options too, some kind of choice either monthly and yearly (even if monthly ends up costing a little bit more like other services do). Adding in 3-month and 6-month options would be great too. Sometimes paying for a full year in advance is not what everyone can afford but they may sign up sooner with monthly options.

    Would also be nice to have some different size options, for personal users it might be good to have a larger option of maybe 5TB or more as many personal users these days have way more files than what will fit in 1-2TB. Personally, I have about 3-4TB not to mention business related files that will vastly exceed that in the coming year.

    I would sign up today, but I have to wait and save for the yearly cost of the 2 user 10TB business account to be within my current budget as a small business.

    Keep up the great work!

  38. One thing about Sync I do not understand, and which upsets me quite a it is that the password cannot be reset in Sync’s web interface, why? Only in the preferences window can you reset the password. But what if your devices melted? In that case you can’t reset your password, which doesn’t make any sense!

  39. Sync have 2 fatal flaws that makes it so I cant use it, it is not NAS compatible and there are no streaming.

  40. I’ve been testing for 2 weeks now, I was quite satisfied except for the slow speed. But the tool Little Snitch (which can show network connections) I saw that at different connections go to different countries. – Ashburn, Virginia (USA) – Toronto, Ontario (CAN) – Ashburn, Virginia (USA) – Toronto, Ontario (CAN)

    Now my question is why appear in the list connections to US servers?

  41. I have been using for over a year. All good except it does not backup system files such as AppData. Don’t want to chance moving it & similar files to the sync folder. I feel many files would be lost in the event of a system failure

  42. Decent enough, but not for me. I store media files and wish to be able to watch them online without them being locally stored. The lack of a search option, and what I elaborated above leads me back to Mega.

  43. Question:’s servers are located in Canada only. I checked with the company. This suggests to me that users in Asia might have latency issues. If you’re a user in Asia, is the absence of servers in Asia an issue for you?

    1. It might be. The distance is definitely going to affect your up- and download speeds. However, if your base speed is decent, it won’t be too bad a hit.

  44. I’m sorry, but I have to make severe criticisms of Sync.
    FIRST: The Desktop application cannot upload to the cloud those files that you have encrypted on your machine, such as a password-protected Word or PDF. This is an unacceptable failure for a cloud service.
    SECOND: I set in the App settings maximum upload bandwidth to 5MB / s, because my contracted internet is 40Mbps, super stable. SYNC was able to send for one hour with only 1.2MB / s. One third of what it promises.
    THIRD: Creating a folder called “Sync” as the only location available for synchronization is not comfortable. Even though the justification is that SYNC is just cloud storage and not Online Backup, but this is not understandable because every good cloud service offers continuous synchronization service and the user may very much be looking for cloud storage but so you want to indicate 3 or 4 folders to be SYNCHRONIZED

  45. CORRECTION TO MY PREVIOUS COMMENT: SYNC was able to upload the encrypted file, but was just not able to while the file was open, being edited.

  46. the lack of a linux client is a problem to me. Will be switching to pcloud when my subscription ends.

  47. I am using Sync for a half-year with paid subscription. And I have to say that I am not satisfied and choose another service at the end of subscription. Biggest cons for me:

    1. Low speed. I use it in central Europe and Sync is often painfully slow. No matter I work with lots of small files or one big file.

    2. Web client is slow. It is not user friendly, missing some standard functions of other services.

    3. Once I found, that I can’t display some photos in web panel and these photos are not synced to other devices too. Tried to upload it again with same result. Tech support advices me to use web client to upload them – that worked. But they was not able to describe me where was the problem. Since this time I can not really trust Sync.

  48. I just signed on for a year with and I reside in Canada.
    So far I find uploading very slow. I have a 1gbps connection and I did an internet speed test and I am at about 261 upload mbps. I am uploading files via the software into (by right clicking copy to vault and the speeds range from 45 kb/s to 500kbps to a max of 4mbps for a minute. Ultimately it has been 3 hours and I have only uploaded 1.4 gigs. Customer service by email is okay, but you can’t talk to anyone on the phone. Which is a big minus for customer service. I don’t know what acceptable upload times are but this seems very slow to me.

  49. Any info or insight on how Sync says they have had third party security audits performed yet choose not to publish the results? Is this standard to not publish this? This bothers me a little.

  50. Gives 5GB space and doesn’t allow you to create more than 3 links. Never seen this anywhere before.

  51. After reading many positive things about Sync, especially on this website, I signed up and paid for a year (back in summer 2019). I’m a heavily disappointed user after 9 months. Every week there are new “conflicted” documents, when you have been working on device 1 and start device 2 the next day or something. When you start a device that’s been off for a while, Sync even starts to re-upload any old documents that have been deleted. I’ve reinstalled the desktop applications multiple times, which didn’t help. Now recently Sync even struggles to sync with its regular local folder, forcing a new installation. I can’t understand why it’s number 1.. Dropbox and Google Drive work much more smooth

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