Möbius Sync vs OneSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
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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).
OneSync
Instantly share files and text between all your devices without needing to sign up. Use QR codes for quick connections and enjoy secure, end-to-end encrypted transfers. Ideal for personal use or quick transfers to friends.
- Instant cross-platform file sharing
- QR code for quick session joining
- Secure end-to-end encryption
- No sign-up required
- Share text and files
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OneSync - Easy Cross-Platform File Sharing Share files and text instantly across all your devices KEY FEATURES: • Instant file sharing across all platforms • QR code for quick session joining • Secure end-to-end encryption • No sign-up required for basic use SIMPLE TO USE: 1. Create a session or join with QR code 2. Select files or text to share 3. Receive instantly on all connected devices SECURE & PRIVATE: • End-to-end encryption Perfect for: • Sharing files between your devices • Quick file transfers to friends • Working across multiple platforms Download OneSync now and experience seamless file sharing! OneSync - 쉽고 빠른 크로스 플랫폼 파일 공유 모든 기기에서 파일과 텍스트를 즉시 공유하세요 주요 기능: • 모든 플랫폼에서 즉시 파일 공유 • QR 코드로 빠른 세션 참여 • 안전한 종단 간 암호화 • 회원가입 없이 바로 사용 가능 사용 방법: 1. 세션을 생성하거나 QR 코드로 참여 2. 공유할 파일이나 텍스트 선택 3. 연결된 모든 기기에서 즉시 수신 안전하고 프라이빗: • 종단 간 암호화 이런 분들께 추천: • 내 기기들 간 파일 공유 • 친구에게 빠른 파일 전송 • 여러 플랫폼에서 작업할 때 지금 OneSync를 다운로드하고 끊김 없는 파일 공유를 경험하세요!
Screenshots
Verdict
The clearest difference is rating: Möbius Sync at 3.8 against OneSync's 1.0. Möbius Sync also leads on ratings volume (140 vs 1). OneSync's advantage is in-app purchases (none vs 1) and update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement 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. OneSync asks for nothing beyond the download.
Möbius Sync holds the better App Store score, 3.8 against 1.0. That said, the two scores are not equally well evidenced: Möbius Sync has 140 ratings behind it against 1, so its average is the more settled of the two.
Möbius Sync ships an update every 2 months, OneSync every 2 weeks. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.
| Parameter | Möbius Sync | OneSync |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (140 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 55.0% of reviews | — |
| Number of ratings | 140 — better | 1 |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Pickup Infinity Limited | JUKI JUNG |
Customer experience
Möbius Sync
OneSync
Bugs and requests
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
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- 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
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- 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
OneSync
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Möbius Sync
- Unlimited file sync$4.99
OneSync
No in-app purchases
