# BAUSUBSTANZ vs CheckTouch

The clearest difference is update cadence: CheckTouch at weekly against BAUSUBSTANZ's every 11 months. BAUSUBSTANZ's advantage is iOS requirement (11.0 vs 15.1). 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.

BAUSUBSTANZ ships an update every 11 months, CheckTouch weekly. The most recent releases landed on October 26, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | BAUSUBSTANZ | CheckTouch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Weekly** |
| Size | 109 MB | 80 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fraunhofer](https://appshunter.io/developer/487639036) | [P&A Development GmbH](https://appshunter.io/developer/1869900481) |

## What reviewers say

### BAUSUBSTANZ

[App page](https://appshunter.io/ios/app/bausubstanz/id860560312)

**Features:** macOS Compatibility

**In-app purchases:** none


### CheckTouch

[App page](https://appshunter.io/ios/app/checktouch-next/id6757953056)

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

**In-app purchases:** none


## Frequently asked questions

### Is BAUSUBSTANZ free?

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

### Is CheckTouch free?

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

### Do BAUSUBSTANZ or CheckTouch have ads?

Neither BAUSUBSTANZ nor CheckTouch shows ads.

### Which is updated more often, BAUSUBSTANZ or CheckTouch?

BAUSUBSTANZ ships an update every 11 months, and CheckTouch weekly. Most recently, BAUSUBSTANZ was updated on October 26, 2026 and CheckTouch on October 22, 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.*