Comparison

Synctrain vs OneSync

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Secure file synchronization
  • Full folder synchronization
  • Specific file selection
  • Audio and video streaming
  • Cross-device file mirroring
  • Customizable sharing permissions
Features
Read full description

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.

About

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.

Highlights
  • Instant cross-platform file sharing
  • QR code for quick session joining
  • Secure end-to-end encryption
  • No sign-up required
  • Share text and files
Features
Read full description

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

Synctrain4 screens
OneSync4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Synctrain versus OneSync: the parameters behind the verdict, then further details
ParameterSynctrainOneSync
PriceFreeFree
Rating4.9 (123 ratings) — better1.0 (1 ratings)
Positive reviews89.5% of reviews—
Number of ratings123 — better1
Update frequencyEvery 6 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.013.0 — better
Further details — not scored
Size33 MB26 MB
Age rating4+4+
DeveloperT-ShapedJUKI JUNG

Customer experience

Synctrain

All ratings123 ratings
Positive96.7%
Neutral1.6%
Negative1.6%
Written reviews95 reviews
Positive89.5%
Neutral6.3%
Negative4.2%

OneSync

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

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

None

Synctrain

No in-app purchases

None

OneSync

No in-app purchases

Questions

Is Synctrain free?
Synctrain is free to download, with no in-app purchases.
Is OneSync free?
OneSync is free to download, with no in-app purchases.
Which has better reviews, Synctrain or OneSync?
Synctrain is rated higher. Synctrain averages 4.9 out of 5 from 123 ratings, while OneSync averages 1.0 from 1 ratings.
Do Synctrain or OneSync have ads?
Neither Synctrain nor OneSync shows ads.
Which is updated more often, Synctrain or OneSync?
Synctrain ships an update every 6 weeks, and OneSync every 2 weeks. Most recently, Synctrain was updated on October 7, 2026 and OneSync on October 8, 2026.

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