DS cloud vs Sync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DS cloud
Access and sync selected folders from your Synology NAS to your mobile device. Enjoy offline viewing of your files anywhere, with customizable sync settings for file size and type.
- Folder synchronization
- Offline file viewing
- Customizable sync settings
- File size limits
- File type filtering
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*You must own a Synology NAS to run this app. To get the full features of DS cloud, the version of the Cloud Station running on your DiskStation should be 4.0 and above. Versions starting from 2.10.4 would only support iOS 8 and onward* DS cloud is the mobile counterpart of Cloud Station on iOS devices. You can select the folders on your DiskStation that you wish to sync to your mobile devices, and make them available for offline viewing anywhere you go. DS cloud also allows you to decide how you'd like to sync: you can set the maximum file size as well as the types of file you wish to sync for each folder. Find out more features about the app on our website: www.synology.com > Solutions > File Syncing https://www.synology.com/dsm/6.1/software_spec/mobile#DScloud
Sync
Securely store, access, and share your files with end-to-end encryption. This cloud storage solution allows you to sync data across all your devices and collaborate with others through shared folders. Protect your sensitive information with robust privacy features.
- 5 GB free secure cloud storage
- Access files from any device
- Secure file sharing via links
- Collaborate with shared folders
- End-to-end encryption
- Access controls
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Sync’s encrypted cloud storage keeps your files safe, secure and private. Access your files from all of your computers and devices easily, and share your files securely with anyone. Features: * Get 5 GB of secure cloud storage free * Access files stored on any computer or device, from your phone or tablet * Upload your photos and videos to Sync * Send large files easily with links * Collaborate and share with teams through shared folders * Protect your files with built-in encryption and access controls How Sync protects your privacy: Sync's end-to-end encrypted cloud storage ensures that only you can access your data. We can't read your files - nor would we want to - ensuring that your documents, photos and videos are safeguarded from unauthorized access. We'd love your feedback! Contact us using the support link below.
Screenshots
Verdict
The clearest difference is rating: Sync at 4.1 against DS cloud's 2.5. Sync also leads on review sentiment (50% vs 23%) and ratings volume (805 vs 72). DS cloud's advantage is iOS requirement (8.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Sync holds the better App Store score, 4.1 against 2.5. That said, the two scores are not equally well evidenced: Sync has 805 ratings behind it against 72, so its average is the more settled of the two. Written reviews point the same way: 23% of DS cloud's written reviews are positive against 50% of Sync's.
DS cloud ships an update every 2 months, Sync monthly. The most recent releases landed on September 16, 2026 and September 27, 2026 respectively.
| Parameter | DS cloud | Sync |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (72 ratings) | 4.1 (805 ratings) — better |
| Positive reviews | 23.4% of reviews | 50.2% of reviews — better |
| Number of ratings | 72 | 805 — better |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 77 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Synology Inc. | Sync.com Inc. |
Customer experience
DS cloud
Sync
User reviews
DS cloud
From 72 App Store ratingsWhat we love
- 💾 Effective file synchronization between devices
- 🔒 Private cloud storage without third-party servers
- 📱 Works well with iPad and iPhone for document management
- ⚡ Fast sync speeds on local networks
- 🎯 Good integration with iWork applications
Room to improve
- 🐛 Crashes frequently on iOS 14+ versions
- ❌ Not compatible with DSM 7.0
- ⚠️ Version mismatch errors preventing login
- 🚫 Hasn't been updated in 3+ years
- 📉 Poor performance on newer iPhone models
Sync
From 805 App Store ratingsWhat we love
- 👍 User-friendly
- 🔒 Secure cloud storage
- 💡 Great value for the price
- 🚀 Fast and reliable
- 🇨🇦 Canadian-based company
Room to improve
- 🐛 Crashes and bugs
- 🔍 Lack of search functionality
- 🚧 Outdated and basic UI
- 🔻 Slow upload/download speeds
- 📂 Limited file management options
Bugs and requests
DS cloud
Reported bugs
14 issues- App crashes on launch with iOS 14.2+
- Face ID causes app to crash immediately
- Touch ID crashes app on iPhone X/XS
- Version not up-to-date error despite fresh installation
- PDF files crash app when opened (2+ pages)
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- Subfolder synchronization not working
- Files appear as 0 bytes and cannot be opened
- Sync stops working after initial setup
- Connection errors on local network
- App freezes during file operations
- Share button functionality broken
- Unable to update credentials after password change
- Incompatibility with newer iOS versions
- Annotation function crashes app
Requested features
16 requests- Update app for iOS 14+ compatibility
- DSM 7.0 support
- Background synchronization capability
- On-demand file download (like Dropbox)
- Face ID and Touch ID support
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- PDF editing and annotation tools
- Automatic photo backup from camera roll
- Integration with iOS Files app
- Split-screen support for iPad
- Password protection for app access
- Ability to change password without unlinking account
- Create folders from within the app
- Recursive subfolder synchronization
- Search functionality across subfolders
- Thumbnail view for images
- Selective file synchronization
Sync
Reported bugs
5 issues- Unreliable camera roll backup
- Inconsistent file sync across devices
- Frequent app crashes and freezes
- Inability to access offline files
- Sync issues when switching devices
Requested features
5 requests- Improved iOS app integration with Files app
- Video playback and streaming support
- Bulk file management (rename, move, delete)
- Advanced sharing options and controls
- Better background sync for photos/videos
In-app purchases
DS cloud
No in-app purchases
Sync
No in-app purchases
