# Concentration Grid vs Reflex Reaction Trainer

The clearest difference is review sentiment: Concentration Grid at 57% against Reflex Reaction Trainer's 0%. Concentration Grid also leads on ads (none vs shown) and chart position (#97 vs unranked). Reflex Reaction Trainer's advantage is price (Free vs $0.99). On in-app purchases, device support and iOS requirement there is nothing between them.

Reflex Reaction Trainer is free to download; Concentration Grid costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Concentration Grid ships an update every 4 weeks, Reflex Reaction Trainer every 2 months. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Concentration Grid | Reflex Reaction Trainer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.3 (7 ratings)](https://appshunter.io/ios/app/concentration-grid/id1066366174/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | **57.1% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Monetization | Paid | **Ad-supported** |
| Best chart rank | **#97** | — |
| Size | 14 MB | 22 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [STALWART GROUP LLC](https://appshunter.io/developer/1066366173) | [Omer Karakas](https://appshunter.io/developer/1645550751) |

## What reviewers say

### Concentration Grid

[App page](https://appshunter.io/ios/app/concentration-grid/id1066366174)

**Currently charting:** #97 Top Paid · Sports (US App Store)

This app offers a digital version of a mental focus grid exercise. Players tap numbers in sequential order within a grid, aiming for the fastest completion time. It's designed to enhance focus, concentration, and mental stamina.

**Highlights:** Sequential number tapping, Timed performance tracking, Adjustable grid sizes (3x3 to 14x14), Competitive challenge, Performance improvement tracking, Leaderboard integration

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

**In-app purchases:** none


### Reflex Reaction Trainer

[App page](https://appshunter.io/ios/app/reflex-reaction-trainer/id6443419167)

Engage in a variety of quick, addictive mini-games designed to sharpen your reflexes, reaction speed, memory, and focus. Test your limits with challenges that are easy to learn but difficult to master, perfect for short bursts of brain training.

**Highlights:** Improve reflexes and reaction speed, Enhance memory and focus, Multiple brain-training modes, Fast and satisfying gameplay, Simple, clean design, Perfect for short sessions

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Concentration Grid free?

Concentration Grid costs $0.99, with no in-app purchases.

### Is Reflex Reaction Trainer free?

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

### Do Concentration Grid or Reflex Reaction Trainer have ads?

Reflex Reaction Trainer shows ads; Concentration Grid does not.

### Which is updated more often, Concentration Grid or Reflex Reaction Trainer?

Concentration Grid ships an update every 4 weeks, and Reflex Reaction Trainer every 2 months. Most recently, Concentration Grid was updated on October 14, 2026 and Reflex Reaction Trainer on October 7, 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.*