# Reaction Time Test vs GammaLab

The clearest difference is in-app purchases: GammaLab at none against Reaction Time Test's 1. Reaction Time Test's advantage is iOS requirement (15.0 vs 17.5). On price, ads and device support there is nothing between them.

Both are free to download. Reaction Time Test sells 1 one-off in-app purchase. GammaLab asks for nothing beyond the download.

## The numbers

| Metric | Reaction Time Test | GammaLab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/reaction-time-test-reflex/id6765722492/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 61 MB | 8 MB |
| Requires iOS | **15.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gunawan Santoso](https://appshunter.io/developer/1843786072) | [David Perez](https://appshunter.io/developer/1243793573) |

## What reviewers say

### Reaction Time Test

[App page](https://appshunter.io/ios/app/reaction-time-test-reflex/id6765722492)

Measure and train your reflexes with a variety of tests including reaction time, decision making, and memory. Track your progress over time and compete with yourself to improve your cognitive speed. Personalize your experience with different themes and layouts.

**Highlights:** 8 ways to test reflexes, Daily challenge and training programs, Progress tracking with trends, Personal bests and achievements, Customizable themes and layouts, Offline data storage

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reflex Pro | $6.99 | one-time |


### GammaLab

[App page](https://appshunter.io/ios/app/gammalab/id6774365968)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Reaction Time Test free?

Reaction Time Test is free to download, with in-app purchases available.

### Is GammaLab free?

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

### Do Reaction Time Test or GammaLab have ads?

Neither Reaction Time Test nor GammaLab 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.*