# QA² vs Bauhaus Echo

The clearest difference is in-app purchases: QA² at none against Bauhaus Echo's 1. QA² also leads on ads (none vs shown). Bauhaus Echo's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Bauhaus Echo sells 1 one-off in-app purchase. QA² asks for nothing beyond the download.

QA² ships an update every 3 weeks, Bauhaus Echo monthly. The most recent releases landed on September 9, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | QA² | Bauhaus Echo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 181 MB | 124 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TISI Incorporated](https://appshunter.io/developer/463993929) | [Such Software](https://appshunter.io/developer/1876359235) |

## What reviewers say

### QA²

[App page](https://appshunter.io/ios/app/qa/id6747648497)

**In-app purchases:** none


### Bauhaus Echo

[App page](https://appshunter.io/ios/app/bauhaus-echo/id6759010657)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is QA² free?

QA² is free to download, with no in-app purchases.

### Is Bauhaus Echo free?

Bauhaus Echo is free to download, with in-app purchases available.

### Do QA² or Bauhaus Echo have ads?

Bauhaus Echo shows ads; QA² does not.

### Which is updated more often, QA² or Bauhaus Echo?

QA² ships an update every 3 weeks, and Bauhaus Echo monthly. Most recently, QA² was updated on September 9, 2026 and Bauhaus Echo on September 12, 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.*