# BrainBuzz vs Reaction

The clearest difference is in-app purchases: BrainBuzz at none against Reaction's 1. BrainBuzz also leads on ads (none vs shown) and update cadence (every 5 days vs every 3 weeks). On price and device support there is nothing between them.

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

BrainBuzz ships an update every 5 days, Reaction every 3 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | BrainBuzz | Reaction |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/reaction-brain-training/id6782079111/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 42 MB | 11 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Studio Solum](https://appshunter.io/developer/1807647357) | [EKIN EMRE ATASOY](https://appshunter.io/developer/1782126325) |

## What reviewers say

### BrainBuzz

[App page](https://appshunter.io/ios/app/brainbuzz-daily-brain-puzzle/id6758908591)

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

**In-app purchases:** none


### Reaction

[App page](https://appshunter.io/ios/app/reaction-brain-training/id6782079111)

Engage in quick, focused daily exercises designed to enhance cognitive abilities like reaction time, memory, and focus. Track your progress and compete on leaderboards with a variety of short, engaging games.

**Highlights:** 11 quick cognitive games, Daily Challenge and streaks, Worldwide leaderboards, Detailed Mind Profile, Offline play, Ad-free option

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is BrainBuzz free?

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

### Is Reaction free?

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

### Do BrainBuzz or Reaction have ads?

Reaction shows ads; BrainBuzz does not.

### Which is updated more often, BrainBuzz or Reaction?

BrainBuzz ships an update every 5 days, and Reaction every 3 weeks. Most recently, BrainBuzz was updated on October 31, 2026 and Reaction on October 31, 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.*