# Strongbox Pro vs Möbius Sync Pro

The clearest difference is price: Möbius Sync Pro at $4.99 against Strongbox Pro's $99.99. Möbius Sync Pro also leads on in-app purchases (none vs 7). Strongbox Pro's advantage is rating (4.7 vs 4.0) and update cadence (every 2 weeks vs every 3 months). On ads, monetization model and iOS requirement there is nothing between them.

Strongbox Pro costs $99.99 and Möbius Sync Pro $4.99 up front. Strongbox Pro sells 7 in-app purchases, starting at $2.99 per month. Möbius Sync Pro asks for nothing beyond the download.

Strongbox Pro holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Strongbox Pro has 338 ratings behind it against 27, so its average is the more settled of the two. Written reviews point the same way: 86% of Strongbox Pro's written reviews are positive against 64% of Möbius Sync Pro's.

Strongbox Pro ships an update every 2 weeks, Möbius Sync Pro every 3 months. Both last shipped on September 23, 2026.

## The numbers

| Metric | Strongbox Pro | Möbius Sync Pro |
| --- | --- | --- |
| Price | $99.99 | **$4.99** |
| Rating | **[4.7 (338 ratings)](https://appshunter.io/ios/app/strongbox-pro/id1481853033/reviews)** | [4.0 (27 ratings)](https://appshunter.io/ios/app/mobius-sync-pro/id1671184333/reviews) |
| Number of ratings | **338** | 27 |
| Positive reviews | **85.7% of reviews** | 64.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Paid | Paid |
| Best chart rank | **#126** | — |
| Size | 136 MB | 22 MB |
| Requires iOS | 15.0 | **14.1** |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Phoebe Code Limited](https://appshunter.io/developer/897283734) | [Pickup Infinity Limited](https://appshunter.io/developer/1118833408) |

## What reviewers say

### Strongbox Pro

[App page](https://appshunter.io/ios/app/strongbox-pro/id1481853033)

**Currently charting:** #126 Top Paid · Productivity (US App Store)

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:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Tip | $2.99 | per month |
| Annual Tip | $19.99 | per year |
| Little Tip | $4.99 | one-time |
| Small Tip | $9.99 | one-time |
| Medium Tip | $19.99 | one-time |
| Large Tip | $99.99 | one-time |
| Huge Tip | $199.99 | one-time |


### Möbius Sync Pro

[App page](https://appshunter.io/ios/app/mobius-sync-pro/id1671184333)

Synchronize files between your iOS devices and other Syncthing-compatible platforms without relying on cloud storage. Supports multiple folders and remote devices, with options to use the app's sandbox or access other app sandboxes.

**Highlights:** File synchronization without cloud services, Supports multiple folders, Supports multiple remote devices, Integrates with iOS Files app, Uses open-source Syncthing engine

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Strongbox Pro free?

Strongbox Pro costs $99.99, and also offers in-app purchases.

### Is Möbius Sync Pro free?

Möbius Sync Pro costs $4.99, with no in-app purchases.

### Which has better reviews, Strongbox Pro or Möbius Sync Pro?

Strongbox Pro is rated higher. Strongbox Pro averages 4.7 out of 5 from 338 ratings, while Möbius Sync Pro averages 4.0 from 27 ratings.

### Do Strongbox Pro or Möbius Sync Pro have ads?

Neither Strongbox Pro nor Möbius Sync Pro shows ads.

### Which is updated more often, Strongbox Pro or Möbius Sync Pro?

Strongbox Pro ships an update every 2 weeks, and Möbius Sync Pro every 3 months. Most recently, Strongbox Pro was updated on September 23, 2026 and Möbius Sync Pro on September 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*