# Brain Training AHA — Brain Training

> Brain Training (iPhone/iPad app by yuzuru watanabe.)

- Source: https://appshunter.io/ios/app/brain-training-aha/id1564714964 (this page in markdown: same URL + `.md`)
- Developer: [yuzuru watanabe](https://appshunter.io/developer/1564714966)
- Category: Entertainment, Games, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 22 MB
- Languages: Japanese
- Released: 2021-05-01
- Data updated: 2026-10-02
- User reviews in markdown: https://appshunter.io/ios/app/brain-training-aha/id1564714964/reviews.md

## What is Brain Training AHA?

Stimulate Your Brain with ‘Aha!’ Moments! A Puzzle Game That Challenges You to Spot Gradual Changes in Images

The exhilarating “Aha!” moment will have you hooked!
A new kind of “spot the difference” brain-training puzzle game that stimulates your vision and brain!

Experience the “Aha!” moment—where parts of an image gradually change—right in the palm of your hand.
At first glance, they look like ordinary photos or illustrations… but something is slowly changing somewhere!?
Sharpen your focus and spot the moment the change happens!

◆ Game Features
The Satisfying “Aha!” Experience
The exhilaration you feel the moment you notice the change after staring intently at the screen is unbeatable! It’s perfect for brain activation (brain training).

A wealth of levels for everyone from beginners to experts
Features a wide variety of challenges, including beautiful landscapes, cute illustrations, and scenes from everyday life!

Quick play during spare moments
Each level takes just a few dozen seconds to complete, making it perfect for commuting, on the way to school, or as a quick break to clear your head!

◆ Recommended for:

・Those who enjoy brain training, quizzes, and puzzle games
・Those who want to experience the thrill of an “Aha!” moment
・Those who want to improve their concentration and observational skills
・Those who are good at or enjoy spot-the-difference games
・Those looking for a free, casual game to pass the time

So, can your brain spot the differences?
Download now and enjoy the ultimate “Aha!” experience!


## Version history (last 3 releases)

### 2.0.1 — 2026-09-29

added questions.

### 2.0.0 — 2026-09-25

We've revamped the app's features.
We've added new questions (18 in total).

### 1.0 — 2021-05-01

No release notes.

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## More apps by yuzuru watanabe

- [どうぶつかくれんぼHit & Blow](https://appshunter.io/ios/app/hit-and-blow/id1564896210)
- [Legame online レガーメオンライン](https://appshunter.io/ios/app/legame-online/id1565756835)
- [CA.B](https://appshunter.io/ios/app/cab/id1577911192)
- [フラッシュ足し算（計算トレーニング）](https://appshunter.io/ios/app/id1584532648)
- [宅飲みデータベース](https://appshunter.io/ios/app/id1585527396)

All apps by yuzuru watanabe: https://appshunter.io/developer/1564714966

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-02.*