# Reaction TestMe vs Fast Reflex

The clearest difference is price: Reaction TestMe at Free against Fast Reflex's $0.99. Reaction TestMe also leads on in-app purchases (none vs 1). Fast Reflex's advantage is rating (4.5 vs 2.3) and ads (none vs shown). On review sentiment and device support there is nothing between them.

Reaction TestMe is free to download; Fast Reflex costs $0.99 up front. Fast Reflex sells 1 one-off in-app purchase. Reaction TestMe asks for nothing beyond the download.

Fast Reflex holds the better App Store score, 4.5 against 2.3. That said, the two scores are not equally well evidenced: Fast Reflex has 47 ratings behind it against 6, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Reaction TestMe ships an update every 38 months, Fast Reflex every 2 weeks. Both last shipped on November 2, 2026.

## The numbers

| Metric | Reaction TestMe | Fast Reflex |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [2.3 (6 ratings)](https://appshunter.io/ios/app/reaction-testme/id1227681882/reviews) | **[4.5 (47 ratings)](https://appshunter.io/ios/app/fast-reflex-test-your-brain/id1426315814/reviews)** |
| Number of ratings | 6 | **47** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 38 months | **Every 2 weeks** |
| Monetization | **Ad-supported** | Paid |
| Size | 91 MB | 76 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Josh Griggs](https://appshunter.io/developer/1227681881) | [Radoslaw Kubas](https://appshunter.io/developer/1643306872) |

## What reviewers say

### Reaction TestMe

[App page](https://appshunter.io/ios/app/reaction-testme/id1227681882)

Test and train your reaction speed with various game modes designed to challenge your reflexes. Improve your response time through daily practice and see how quickly you can react to visual cues.

**Highlights:** Test reaction speed, Train reaction speed, Reflex game mode, Lights Out game mode, Daily training

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

**In-app purchases:** none


### Fast Reflex

[App page](https://appshunter.io/ios/app/fast-reflex-test-your-brain/id1426315814)

This game challenges your reaction speed and hand-eye coordination with precise testing down to a millionth of a second. Compete globally on leaderboards and explore unique tests to boost focus and dexterity.

**Highlights:** Precise reflex testing, Global leaderboards, Telepathy test, Enhances focus and dexterity, Simple interface, Quick mental exercises

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Reaction TestMe free?

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

### Is Fast Reflex free?

Fast Reflex costs $0.99, and also offers in-app purchases.

### Which has better reviews, Reaction TestMe or Fast Reflex?

Fast Reflex is rated higher. Reaction TestMe averages 2.3 out of 5 from 6 ratings, while Fast Reflex averages 4.5 from 47 ratings.

### Do Reaction TestMe or Fast Reflex have ads?

Reaction TestMe shows ads; Fast Reflex does not.

### Which is updated more often, Reaction TestMe or Fast Reflex?

Reaction TestMe ships an update every 38 months, and Fast Reflex every 2 weeks. Most recently, Reaction TestMe was updated on November 2, 2026 and Fast Reflex on November 2, 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.*