DS cloud vs Möbius 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
Read full descriptionHide full description
*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
Möbius Sync
Synchronize files between your iOS devices and other Syncthing-supported platforms without relying on cloud storage. Manage multiple folders and remote devices, with options for sandbox or experimental cross-app sandbox syncing.
- File synchronization between iOS and other Syncthing devices
- No cloud service required
- Supports multiple folders and remote devices
- Sync within app sandbox or other app sandboxes (paid)
- Uses open-source Syncthing engine
Read full descriptionHide full description
Möbius Sync brings Syncthing to your iPhone or iPad, allowing you to synchronize selected files between iOS devices and other devices supported by Syncthing, without the need for any cloud service. Supports multiple folders and multiple remote devices. Synchronized folders can be created either: 1. in the Möbius Sync sandbox and files can be added to and retrieved from shared folders via the iOS Files app; or 2. (PAID feature) by accessing other apps' sandboxes. This feature is EXPERIMENTAL and may break other app's functionality. Uses the open-source Syncthing engine internally. Usage within the Möbius Sync sandbox is free up to 20MB. Unlimited file sync, including files in other apps' sanboxes is available for a one-time purchase. NOTE: The functionality unlocked by in-app purchase is identical to that in Möbius Sync Pro (which is purchased up-front).
Screenshots
Verdict
The clearest difference is rating: Möbius Sync at 3.8 against DS cloud's 2.5. Möbius Sync also leads on review sentiment (55% vs 23%). DS cloud's advantage is in-app purchases (none vs 1) and iOS requirement (8.0 vs 14.1). On price, ratings volume, update cadence and ads 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. Möbius Sync sells 1 one-off in-app purchase. DS cloud asks for nothing beyond the download.
Möbius Sync holds the better App Store score, 3.8 against 2.5. Both are backed by a comparable volume of ratings — 72 and 140 respectively. Written reviews point the same way: 23% of DS cloud's written reviews are positive against 55% of Möbius Sync's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 16, 2026 and September 29, 2026 respectively.
| Parameter | DS cloud | Möbius Sync |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (72 ratings) | 3.8 (140 ratings) — better |
| Positive reviews | 23.4% of reviews | 55.0% of reviews — better |
| Number of ratings | 72 | 140 — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 14.1 |
| Further details — not scored | ||
| Size | 77 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Synology Inc. | Pickup Infinity Limited |
Customer experience
DS cloud
Möbius 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
Möbius Sync
From 140 App Store ratingsWhat we love
- ✅ Effective Syncthing implementation for iOS
- 💰 Fair one-time purchase model (no subscription)
- 🔒 Privacy-focused peer-to-peer syncing
- 📱 Good Files app integration
- ⚡ Fast file synchronization when working
Room to improve
- 🐛 Outdated internal Syncthing version (1.28 vs 2.x)
- 💸 Aggressive paywall at 20MB free limit
- 🔌 No true background sync (iOS limitation)
- 🚫 Cannot sync iOS Photos app natively
- ⚠️ Inconsistent purchase restoration across devices
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)
Show 9 moreShow fewer
- 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
Show 11 moreShow fewer
- 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
Möbius Sync
Reported bugs
16 issues- Syncthing version incompatibility with v2.x devices
- Device discovery limited to 1 of 5 paired devices
- Insufficient space errors despite available storage
- Purchase dialog rendering issues on older devices
- Purchase not persisting after app reinstall
Show 11 moreShow fewer
- Settings reset after app updates
- External folder bookmark path cannot be changed
- .stfolder sync failures and naming conflicts
- Sync hangs at intermediate percentages
- Files not appearing in designated folders despite sync confirmation
- App crashes and becomes unresponsive
- Language preference not saved between sessions
- Syncthing disabled errors with no explanation
- Quick Sync feature not working reliably
- Accessibility issues with VoiceOver
- App storage consuming excessive disk space (10GB+)
Requested features
15 requests- Update internal Syncthing to version 2.x or higher
- iOS Photos app sync capability (at least one-way upload)
- True background synchronization
- Selective folder sync to save storage space
- File Provider extension for deeper iOS integration
Show 10 moreShow fewer
- Widget for continuous background operation
- Photo library backup functionality
- Family sharing support for purchases
- Better UI/UX with custom frontend instead of web interface
- Automatic sync without manual app opening
- Support for untrusted devices
- Folder encryption support
- Location-based sync triggers
- More frequent Syncthing core updates
- Better documentation and setup guides
In-app purchases
DS cloud
No in-app purchases
Möbius Sync
- Unlimited file sync$4.99
