Resilio Sync vs Möbius Sync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Resilio Sync
Securely transfer files and back up photos between your devices without using third-party servers. Enjoy unlimited storage and speed, with direct peer-to-peer transfers for privacy and efficiency. Supports all file types across various platforms.
- Private cloud creation
- Secure direct file transfers
- Unlimited storage and speed
- Automatic camera backup
- Cross-platform device support
- Selective file syncing
Read full descriptionHide full description
Sync is the best way to transfer files between your Mac, PC, NAS, and even server. Create your own private cloud. Connect devices and sync files securely without sending them on third-party servers. We don’t limit your speed or storage space: our technology works especially well with huge files. No storage limits • Sync as much data as you have on your hard drives. Automatic camera backup • Sync will back up photos and videos as soon as you take them. • You can then delete photos from your phone and save space. Direct transfers, no cloud • Your information is never stored on servers in the cloud, so nobody can access it without your permission. • Transfer files directly and fast using peer-to-peer technology (p2p). Any device and platform • Access folders and upload files to your tablet, PC, Mac, NAS, and even server. Supports all file types • Add photos, videos, music, docs, and PDFs from other apps to any of your synced folders. Save space • Selective Sync lets you save only the files you need. To get the best performance and to avoid running up your data charges while syncing folders, we recommend leaving the "Use Cellular Data" setting off. By downloading or using this app, you agree to the Terms of Use: (https://www.resilio.com/legal/terms-of-use), Privacy Policy (https://www.resilio.com/legal/privacy) and End User License Agreement (https://www.resilio.com/legal/eula-sync).
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: Resilio Sync at 4.5 against Möbius Sync's 3.8. Resilio Sync also leads on in-app purchases (none vs 1) and review sentiment (78% vs 55%). Möbius Sync's advantage is ads (none vs shown). On price, update cadence, monetization model and device support 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. Resilio Sync asks for nothing beyond the download.
Resilio Sync holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: Resilio Sync has 844 ratings behind it against 140, so its average is the more settled of the two. Written reviews point the same way: 78% of Resilio Sync's written reviews are positive against 55% of Möbius Sync's.
Resilio Sync ships an update every 3 months, Möbius Sync every 2 months. Both last shipped on September 20, 2026.
| Parameter | Resilio Sync | Möbius Sync |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (844 ratings) — better | 3.8 (140 ratings) |
| Positive reviews | 77.7% of reviews — better | 55.0% of reviews |
| Number of ratings | 844 — better | 140 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11 — better | 14.1 |
| Further details — not scored | ||
| Size | 31 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Resilio Inc. | Pickup Infinity Limited |
Customer experience
Resilio Sync
Möbius Sync
User reviews
Resilio Sync
From 844 App Store ratingsWhat we love
- 🚀 Fast and reliable syncing
- 🔒 Secure private cloud solution
- 👍 Seamless cross-platform integration
- 💡 Selective sync for efficient storage management
- 👍 Easy to set up and use
Room to improve
- 🐛 Occasional crashes and bugs
- 🔋 Lack of background sync on iOS
- 👎 Limited file management features within the app
- 👎 Outdated iOS integration, not optimized for newer versions
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
Resilio Sync
Reported bugs
3 issues- Syncing issues after iOS updates
- Inconsistent behavior when removing folders
- Camera roll backup not working as expected
Requested features
4 requests- Improved iOS integration with Files app
- Background sync for camera roll backup
- Built-in media player and gallery view
- Ability to select and move multiple files at once
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
Resilio Sync
No in-app purchases
Möbius Sync
- Unlimited file sync$4.99
