# QA² vs Numora by RD Skynet

The clearest difference is device support: QA² at 3 against Numora by RD Skynet's 1. QA² also leads on iOS requirement (15.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

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

## The numbers

| Metric | QA² | Numora by RD Skynet |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free | — |
| Size | 180 MB | 11 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TISI Incorporated](https://appshunter.io/developer/463993929) | [Raghul S](https://appshunter.io/developer/1344469407) |

## 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


### Numora by RD Skynet

[App page](https://appshunter.io/ios/app/numora-by-rd-skynet/id6787412836)

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

**In-app purchases:** none


## Frequently asked questions

### Is QA² free?

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

### Is Numora by RD Skynet free?

Numora by RD Skynet is free to download, with no in-app purchases.

### Do QA² or Numora by RD Skynet have ads?

Neither QA² nor Numora by RD Skynet shows ads.

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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.*