Comparison

Strongbox Pro vs Synctrain

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

Head to head
About

Strongbox Pro

Securely store and protect all your passwords with one master password. Supports open-source formats and offers advanced security features like biometric unlock, hardware token protection, and cloud syncing.

Highlights
  • Master password protection
  • Biometric unlock (Face ID/Touch ID)
  • Passkey and YubiKey support
  • Military-grade encryption
  • Cloud sync (iCloud, Dropbox, etc.)
  • Password auditing (weak passwords, HIBP check)
  • Secure password generation
Features
Read full description

Strongbox Pro is available here for outright and upfront purchase instead of via an In-App Purchase upgrade. This version of Strongbox is identical to the much loved Strongbox application with all the Pro features and the same regular update schedule. Strongbox is an application for keeping all your passwords safely stored and protected by one master password. Supporting the open source Password Safe and KeePass formats. *** Supports Family Sharing *** *** Features *** - Face ID/Touch ID Unlock for the ultimate in convenience, security and speed. - PIN Code Unlock with a Duress PIN option for those tricky situations. - Passkey support - The latest, most convenient and most secure authentication method (passkeys). - YubiKey protection - secure your databases with a hardware token. - Secure - protected by time tested military grade cryptography. - Private - Isolated In-App attachments viewer for your sensitive documents, photos & videos. - Audit your passwords - Automatically check your database for weak passwords including a 'Have I Been Pwned?' check. - Cloud Support, so you can access your cloud safes using iCloud, Dropbox, OneDrive, Google Drive, WebDAV or SFTP even when offline. Use the built in Files app for many other storage options or store them securely only on your local device. You choose your storage. - Search your entire set of passwords and secrets instantly and powerfully, with deep search. Autocomplete new entries, and auto generate secure passwords. - Compatible - Import/Export by Files app, Email, CSV, iTunes File Sharing or use cloud storage. - Standards compliant - using the time tested Password Safe and KeePass formats so you can import any existing password safe you have. - Features galore - Incredibly configurable password generation including Diceware (XKCD) & regular passwords. - Timed Auto Clear Clipboard. - Entry History. - KeePass Field References, Tags, Custom Icon & FavIcons (including automatic search & download). - Two Factor Authentication codes (TOTP) - QR Code, Steam & Manual. --------------------------------------------------------------------- • Payment will be charged to iTunes Account at confirmation of purchase • Strongbox Privacy Policy may be found here: https://strongboxsafe.com/privacy-policy/ • Strongbox Terms of Use may be found here: https://strongboxsafe.com/terms/

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.

Screenshots

Strongbox Pro4 screens
Synctrain4 screens

Verdict

The call

The clearest difference is price: Synctrain at Free against Strongbox Pro's $99.99. Synctrain also leads on in-app purchases (none vs 7) and rating (4.9 vs 4.7). Strongbox Pro's advantage is update cadence (every 2 weeks vs every 6 weeks) and device support (5 vs 3). On review sentiment, ratings volume and ads 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

Synctrain is free to download; Strongbox Pro costs $99.99 up front. Strongbox Pro sells 7 in-app purchases, starting at $2.99 per month. Synctrain asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Synctrain holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 338 and 123 respectively. Written reviews point the same way: 86% of Strongbox Pro's written reviews are positive against 89% of Synctrain's.

UpkeepUpdate frequency

Strongbox Pro ships an update every 2 weeks, Synctrain every 6 weeks. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

Scorecard7 real differences · 3 level
Strongbox Pro versus Synctrain: the parameters behind the verdict, then further details
ParameterStrongbox ProSynctrain
Price$99.99Free — better
Rating4.7 (338 ratings)4.9 (123 ratings) — better
Positive reviews85.8% of reviews89.5% of reviews — better
Number of ratings338 — better123
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod, Mac, Apple Watch — betteriPhone, iPad, Mac
Requires iOS15.0 — better17.0
Further details — not scored
Size136 MB33 MB
Age rating4+4+
DeveloperPhoebe Code LimitedT-Shaped

Customer experience

Strongbox Pro

All ratings338 ratings
Positive93.5%
Neutral0.9%
Negative5.6%
Written reviews225 reviews
Positive85.8%
Neutral3.6%
Negative10.7%

Synctrain

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

Bugs and requests

Strongbox Pro

Not enough reviews yet to summarise bugs or 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

In-app purchases

7 purchases

Strongbox Pro

Subscriptions2
  • Monthly Tip$2.991 Month
  • Annual Tip$19.991 Year
One-time5
  • Little Tip$4.99
  • Small Tip$9.99
  • Medium Tip$19.99
Show 2 more
  • Large Tip$99.99
  • Huge Tip$199.99
None

Synctrain

No in-app purchases

Questions

Is Strongbox Pro free?
Strongbox Pro costs $99.99, and also offers in-app purchases.
Is Synctrain free?
Synctrain is free to download, with no in-app purchases.
Which has better reviews, Strongbox Pro or Synctrain?
Synctrain is rated higher. Strongbox Pro averages 4.7 out of 5 from 338 ratings, while Synctrain averages 4.9 from 123 ratings.
Do Strongbox Pro or Synctrain have ads?
Neither Strongbox Pro nor Synctrain shows ads.
Which is updated more often, Strongbox Pro or Synctrain?
Strongbox Pro ships an update every 2 weeks, and Synctrain every 6 weeks. Most recently, Strongbox Pro was updated on October 13, 2026 and Synctrain on October 7, 2026.

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