# Concentrate! vs Reflex Test & Reaction Time

The clearest difference is in-app purchases: Concentrate! at none against Reflex Test & Reaction Time's 1. Concentrate! also leads on ads (none vs shown) and iOS requirement (8.0 vs 14.0.0). On price, update cadence and device support there is nothing between them.

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

Concentrate! ships an update every 3 months, Reflex Test & Reaction Time every 4 months. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Concentrate! | Reflex Test & Reaction Time |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/concentrate/id490393546/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 41 MB |
| Requires iOS | **8.0** | 14.0.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [norbert nagy](https://appshunter.io/developer/328221395) | [Ethem Yavuz](https://appshunter.io/developer/1592978206) |

## What reviewers say

### Concentrate!

[App page](https://appshunter.io/ios/app/concentrate/id490393546)

Test and improve your focus and reaction time with a color-matching game.  The objective is to correctly identify if the displayed color word matches its font color, aiming for speed and accuracy.

**Highlights:** Color word-font color matching, Tests concentration, Measures reaction speed, Game Center Leaderboards, Single-player mode

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

**In-app purchases:** none


### Reflex Test & Reaction Time

[App page](https://appshunter.io/ios/app/reflex-test-and-reaction-time/id6746488281)

Sharpen your mind and boost reaction time with engaging mini-games. Improve focus, speed, and cognitive agility through scientifically designed challenges. Track progress and aim for peak mental performance.

**Highlights:** 4 exciting mini-games, Reaction time tests, Focus and concentration training, Hand-eye coordination challenges, Progress tracking and stats, Personalized brain training

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Concentrate! free?

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

### Is Reflex Test & Reaction Time free?

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

### Do Concentrate! or Reflex Test & Reaction Time have ads?

Reflex Test & Reaction Time shows ads; Concentrate! does not.

### Which is updated more often, Concentrate! or Reflex Test & Reaction Time?

Concentrate! ships an update every 3 months, and Reflex Test & Reaction Time every 4 months. Most recently, Concentrate! was updated on October 4, 2026 and Reflex Test & Reaction Time on October 8, 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.*