# Reaction Time Test vs React CRT

The clearest difference is review sentiment: React CRT at 100% against Reaction Time Test's 50%. React CRT also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 3 months). Reaction Time Test's advantage is in-app purchases (none vs 2). On price, device support and iOS requirement there is nothing between them.

Both are free to download. React CRT sells 2 in-app purchases, starting at $4.99 per month. Reaction Time Test asks for nothing beyond the download.

Reaction Time Test ships an update every 3 months, React CRT every 3 weeks. The most recent releases landed on September 23, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Reaction Time Test | React CRT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/react-crt/id6743370995/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 13 MB | 71 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ryouhei Azuma](https://appshunter.io/developer/1353297781) | [Yoed Agmon](https://appshunter.io/developer/1802480394) |

## What reviewers say

### Reaction Time Test

[App page](https://appshunter.io/ios/app/reaction-time-test-rtt/id1669730948)

Test and train your reflexes with this app. Simply tap the screen when a red square appears to measure your reaction speed and improve your concentration. Daily practice can enhance your reflexes, making it ideal for gamers.

**Highlights:** Reaction speed testing, Reflex training, Concentration improvement, Rank display, Daily practice recommended

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

**In-app purchases:** none


### React CRT

[App page](https://appshunter.io/ios/app/react-crt/id6743370995)

This app combines cognitive and coordination training using a unique method to improve reaction time, decision-making, and precision. It's designed for athletes, those in recovery, and individuals looking to enhance focus or maintain cognitive sharpness with age.

**Highlights:** Cognition and coordination training, Improves reaction time, Enhances decision-making, Boosts precision and movement control, Suitable for athletes and rehabilitation, Engaging for kids and seniors

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Yearly | $19.99 | per year |


## Frequently asked questions

### Is Reaction Time Test free?

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

### Is React CRT free?

React CRT is free to download, with in-app purchases available.

### Do Reaction Time Test or React CRT have ads?

Reaction Time Test shows ads; React CRT does not.

### Which is updated more often, Reaction Time Test or React CRT?

Reaction Time Test ships an update every 3 months, and React CRT every 3 weeks. Most recently, Reaction Time Test was updated on September 23, 2026 and React CRT on October 6, 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.*