Comparison

Synctrain vs Sia Storage

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 devices running Syncthing. Stream audio and video directly from other devices. All changes, including deletions, are mirrored across your connected devices.

Highlights
  • Secure file synchronization
  • Full folder or specific file syncing
  • Audio and video streaming
  • Cross-device changes mirrored
  • Integrates with iOS Files app
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

Sia Storage

Securely store and organize your files with end-to-end encryption. Your data is split and distributed across a decentralized network, ensuring no single point of failure. Access your files from any device and benefit from automatic photo backup and file versioning.

Highlights
  • End-to-end encryption
  • Decentralized file distribution
  • Automatic photo backup
  • Multi-device sync
  • File versioning
  • Open source
Features
Read full description

Sia Storage is the world's safest cloud storage, by design. Your files are encrypted on your device before they ever leave your phone, split into 30 pieces using erasure coding, and distributed across a decentralized network of hosts worldwide. Only 10 of those 30 pieces are needed to recover your data — no single point of failure, no central server to breach. YOUR DATA, YOUR KEYS Sia Storage uses end-to-end encryption. Your recovery phrase is the only key to your data — not even Sia can access your files. No tracking, no ads, no data harvesting. STORE AND ORGANIZE Upload photos, videos, and documents. Organize files into folders, tag them for quick access, and mark favorites. Browse your library with search and filtering by file type. AUTOMATIC PHOTO BACKUP Enable archive sync to automatically back up your photo library to the Sia network. Track progress as your photos are encrypted and uploaded in the background. MULTI-DEVICE SYNC Access your files from any device. Sia Storage syncs your encrypted library across devices through your indexer — add a file on your phone, see it on your desktop. FILE VERSIONING Upload updated versions of files and browse their history. Sia Storage keeps track of versions so you never lose previous work. HOW IT WORKS Traditional cloud storage trusts a single company with your data. Sia splits your encrypted files across dozens of independent hosts using erasure coding. Even if hosts go offline, your data remains available and intact. Learn more in the app's built-in guides. IMPORT FROM ANYWHERE Take a photo or video directly in the app, choose from your photo library, or import from the Files app. Share files from any app on your phone directly into Sia Storage. OPEN SOURCE Sia Storage is built by The Sia Foundation, a non-profit dedicated to decentralized storage. The app is fully open source.

Screenshots

Synctrain4 screens
Sia Storage4 screens

Verdict

The call

The clearest difference is update cadence: Sia Storage at fortnightly against Synctrain's every 6 weeks. Sia Storage also leads on review sentiment (100% vs 89%). Synctrain's advantage is ratings volume (142 vs 9). On price, rating, ads and in-app purchases 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

On the App Store both sit at effectively the same score — 4.9 for Synctrain against 4.9 for Sia Storage. That said, the two scores are not equally well evidenced: Synctrain has 142 ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 89% of Synctrain's written reviews are positive against 100% of Sia Storage's.

UpkeepUpdate frequency

Synctrain ships an update every 6 weeks, Sia Storage fortnightly. Both last shipped on November 8, 2026.

Scorecard3 real differences · 7 level
Synctrain versus Sia Storage: the parameters behind the verdict, then further details
ParameterSynctrainSia Storage
PriceFreeFree
Rating4.9 (142 ratings)4.9 (9 ratings) — better
Positive reviews89.5% of reviews100.0% of reviews — better
Number of ratings142 — better9
Update frequencyEvery 6 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size42 MB73 MB
Age rating4+12+
DeveloperT-ShapedSia Storage

Customer experience

Synctrain

All ratings141 ratings
Positive95.7%
Neutral2.1%
Negative2.1%
Written reviews95 reviews
Positive89.5%
Neutral6.3%
Negative4.2%

Sia Storage

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Sia Storage

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Synctrain

No in-app purchases

None

Sia Storage

No in-app purchases

Questions

Is Synctrain free?
Synctrain is free to download, with no in-app purchases.
Is Sia Storage free?
Sia Storage is free to download, with no in-app purchases.
Which has better reviews, Synctrain or Sia Storage?
Sia Storage is rated higher. Synctrain averages 4.9 out of 5 from 142 ratings, while Sia Storage averages 4.9 from 9 ratings.
Do Synctrain or Sia Storage have ads?
Neither Synctrain nor Sia Storage shows ads.
Which is updated more often, Synctrain or Sia Storage?
Synctrain ships an update every 6 weeks, and Sia Storage fortnightly. Most recently, Synctrain was updated on November 8, 2026 and Sia Storage on November 8, 2026.

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