Synctrain vs OneSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Synctrain
Securely synchronize files and folders between your devices. Stream audio and video directly from other devices. Manage file sharing permissions to control access to your data.
- Secure file synchronization
- Full folder synchronization
- Specific file selection
- Audio and video streaming
- Cross-device file mirroring
- Customizable sharing permissions
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With Synctrain you can securely synchronize files with other devices that have Syncthing installed. You can choose to synchronize full folders, or choose specific files. With Synctrain you can also stream audio and video files from other devices. When you synchronize files, all changes, including deleting files, also happen on your other devices. Do not use Synctrain for back-up purposes, and always keep a back-up of your data. You decide with which devices you share which files. This also means the app makers cannot help you access or recover any lost files. This app is powered by Syncthing. This app is however not associated with or endorsed by Syncthing nor its developers. Please do not expect support from the Syncthing developers. Instead, contact the maker of this app if you have questions.
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: Synctrain at 4.9 against OneSync's 1.0. Synctrain also leads on ratings volume (123 vs 1). OneSync's advantage is update cadence (every 2 weeks vs every 6 weeks) and iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and monetization model 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.
Synctrain holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Synctrain has 123 ratings behind it against 1, so its average is the more settled of the two.
Synctrain ships an update every 6 weeks, OneSync every 2 weeks. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.
| Parameter | Synctrain | OneSync |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (123 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 89.5% of reviews | — |
| Number of ratings | 123 — better | 1 |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 33 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | T-Shaped | JUKI JUNG |
Customer experience
Synctrain
OneSync
Bugs and requests
Synctrain
Reported bugs
2 issues- Occasional app crashes
- Sync delays on some devices
Requested features
2 requests- Direct photo/video sync to remote devices
- Faster initial connection to server
OneSync
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Synctrain
No in-app purchases
OneSync
No in-app purchases









