# Stroop Challenge Go vs Quick! Reaction Speed Test

The clearest difference is iOS requirement: Stroop Challenge Go at 15.0 against Quick! Reaction Speed Test's 18.6. 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.

## The numbers

| Metric | Stroop Challenge Go | Quick! Reaction Speed Test |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 1 MB | 3 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [晓 郭](https://appshunter.io/developer/1895645928) | [CHENG HSUAN HSIEH](https://appshunter.io/developer/1725717008) |

## What reviewers say

### Stroop Challenge Go

[App page](https://appshunter.io/ios/app/stroop-challenge-go/id6773266246)

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

**In-app purchases:** none


### Quick! Reaction Speed Test

[App page](https://appshunter.io/ios/app/quick-reaction-speed-test/id6797248180)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stroop Challenge Go free?

Stroop Challenge Go is free to download, with no in-app purchases.

### Is Quick! Reaction Speed Test free?

Quick! Reaction Speed Test is free to download, with no in-app purchases.

### Do Stroop Challenge Go or Quick! Reaction Speed Test have ads?

Neither Stroop Challenge Go nor Quick! Reaction Speed Test 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.*