# Defend the Brain vs Brain Training

The clearest difference is in-app purchases: Brain Training at none against Defend the Brain's 1. Brain Training also leads on update cadence (every 5 days vs every 5 weeks). Defend the Brain's advantage is ads (none vs shown) and iOS requirement (8.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Defend the Brain sells 1 one-off in-app purchase. Brain Training asks for nothing beyond the download.

Defend the Brain ships an update every 5 weeks, Brain Training every 5 days. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Defend the Brain | Brain Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/defend-the-brain-right-left-brain-test/id1240222889/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 57 MB | 25 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Pixel Bistro](https://appshunter.io/developer/976506039) | [Taisuke Hosokawa](https://appshunter.io/developer/1585548762) |

## What reviewers say

### Defend the Brain

[App page](https://appshunter.io/ios/app/defend-the-brain-right-left-brain-test/id1240222889)

Test your brain's speed and dominance between the left and right hemispheres. Compete globally in a game of split-second reactions. See if you can keep up with historical geniuses.

**Highlights:** Brain speed test, Left vs. Right brain dominance, Global leaderboards, Split-second reaction challenges, Compete with friends

**In-app purchases (1)**

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


### Brain Training

[App page](https://appshunter.io/ios/app/brain-training-memory-game/id6741750393)

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

**In-app purchases:** none


## Frequently asked questions

### Is Defend the Brain free?

Defend the Brain is free to download, with in-app purchases available.

### Is Brain Training free?

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

### Do Defend the Brain or Brain Training have ads?

Brain Training shows ads; Defend the Brain does not.

### Which is updated more often, Defend the Brain or Brain Training?

Defend the Brain ships an update every 5 weeks, and Brain Training every 5 days. Most recently, Defend the Brain was updated on October 8, 2026 and Brain Training on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*