# QA² vs Circle Traffic Car

QA² and Circle Traffic Car are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | QA² | Circle Traffic Car |
| --- | --- | --- |
| 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 | 14 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TISI Incorporated](https://appshunter.io/developer/463993929) | [CEYDA GONEN](https://appshunter.io/developer/1768616569) |

## 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


### Circle Traffic Car

[App page](https://appshunter.io/ios/app/circle-traffic-car/id6792293045)

**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 Circle Traffic Car free?

Circle Traffic Car is free to download, with no in-app purchases.

### Do QA² or Circle Traffic Car have ads?

Neither QA² nor Circle Traffic Car 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.*