# TechTool Handwerker App vs RSA21.app

The clearest difference is update cadence: RSA21.app at weekly against TechTool Handwerker App's every 3 weeks. TechTool Handwerker App's advantage is iOS requirement (13.0 vs 15.0). 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.

TechTool Handwerker App ships an update every 3 weeks, RSA21.app weekly. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | TechTool Handwerker App | RSA21.app |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 52 MB | 29 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Layer Four GmbH & Co. KG](https://appshunter.io/developer/1609248494) | [KMS Gruppe](https://appshunter.io/developer/6810972514) |

## What reviewers say

### TechTool Handwerker App

[App page](https://appshunter.io/ios/app/techtool-handwerker-app/id6738645063)

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

**In-app purchases:** none


### RSA21.app

[App page](https://appshunter.io/ios/app/rsa21app/id6810972512)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TechTool Handwerker App free?

TechTool Handwerker App is free to download, with no in-app purchases.

### Is RSA21.app free?

RSA21.app is free to download, with no in-app purchases.

### Do TechTool Handwerker App or RSA21.app have ads?

Neither TechTool Handwerker App nor RSA21.app shows ads.

### Which is updated more often, TechTool Handwerker App or RSA21.app?

TechTool Handwerker App ships an update every 3 weeks, and RSA21.app weekly. Most recently, TechTool Handwerker App was updated on October 25, 2026 and RSA21.app on October 26, 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.*