# TU Dortmund vs SAFE SERVICE®

The clearest difference is update cadence: TU Dortmund at fortnightly against SAFE SERVICE®'s every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

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

TU Dortmund ships an update fortnightly, SAFE SERVICE® every 4 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | TU Dortmund | SAFE SERVICE® |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Size | 56 MB | 129 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TU Dortmund](https://appshunter.io/developer/1509463868) | [duftner.digital services GmbH](https://appshunter.io/developer/1492246856) |

## What reviewers say

### TU Dortmund

[App page](https://appshunter.io/ios/app/tu-dortmund/id987953936)

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


### SAFE SERVICE®

[App page](https://appshunter.io/ios/app/safe-service/id1532899476)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TU Dortmund free?

TU Dortmund is free to download, with no in-app purchases.

### Is SAFE SERVICE® free?

SAFE SERVICE® is free to download, with no in-app purchases.

### Do TU Dortmund or SAFE SERVICE® have ads?

Neither TU Dortmund nor SAFE SERVICE® shows ads.

### Which is updated more often, TU Dortmund or SAFE SERVICE®?

TU Dortmund ships an update fortnightly, and SAFE SERVICE® every 4 months. Most recently, TU Dortmund was updated on October 26, 2026 and SAFE SERVICE® on October 25, 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.*