# QA² vs PatchWall

The clearest difference is ads: QA² at none against PatchWall's shown. On price, update cadence, 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.

QA² ships an update every 3 weeks, PatchWall fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | QA² | PatchWall |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 180 MB | 25 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TISI Incorporated](https://appshunter.io/developer/463993929) | [Federico Gherardi](https://appshunter.io/developer/461560272) |

## What reviewers say

### QA²

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

Engage in a unique puzzle game set in the quantum world. Swipe and match colorful blocks to create satisfying chain reactions and master various game modes. Challenge AI opponents and compete on global leaderboards.

**Highlights:** Quantum-themed puzzle gameplay, Satisfying chain reaction system, Multiple game modes (Rush, Depth, Flow, Overload), VS AI mode with challenging opponents, Global leaderboards for competitive play, Brain training mechanics

**In-app purchases:** none


### PatchWall

[App page](https://appshunter.io/ios/app/patchwall/id6754010105)

**In-app purchases:** none


## Frequently asked questions

### Is QA² free?

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

### Is PatchWall free?

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

### Do QA² or PatchWall have ads?

PatchWall shows ads; QA² does not.

### Which is updated more often, QA² or PatchWall?

QA² ships an update every 3 weeks, and PatchWall fortnightly. Most recently, QA² was updated on October 24, 2026 and PatchWall 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.*