# Katachi - Shape Reflex Puzzle — 10-Question Daily Brain Game

> 10-Question Daily Brain Game (iPhone/iPad app by atsuko imai.)

- Source: https://appshunter.io/ios/app/katachi-shape-reflex-puzzle/id6760748598 (this page in markdown: same URL + `.md`)
- Developer: [atsuko imai](https://appshunter.io/developer/1830783417)
- Category: Games, Education, Casual, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: Arabic, Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek and 20 more
- Released: 2026-03-27
- Data updated: 2026-06-11
- User reviews in markdown: https://appshunter.io/ios/app/katachi-shape-reflex-puzzle/id6760748598/reviews.md

## What is Katachi?

〔What is Katachi?〕
Shapes stream across the screen — circles, triangles, squares, stars — in four directions and five colors. One rule: tap only the ones that match the prompt. Sounds simple. Gets real fast.

〔Four Ways to Play〕
· 10-Question Challenge — Four difficulty levels (Easy to Expert) plus negation prompts ("tap everything except…") keep every session fresh
· Daily Challenge — 10 questions shared worldwide each day. Track your streak and share results Wordle-style
· Endless Mode — Survive as long as you can. No mercy.
· 200 Levels — A long-form progression that grows with you

〔Brain Age〕
Your reaction speed is measured and converted into a brain-response age (15–80). Play daily to push it younger.

〔Built with care〕
· 80 prompt patterns (4 shapes × 5 colors × 4 directions)
· Detailed stats with Swift Charts
· Dark mode and color-accessibility support
· No internet required (except ads)
· Zero personal data collected

〔Privacy〕
All gameplay data stays on your device. No account needed.

Privacy Policy: https://kazusa703.github.io/privacy.html
Terms of Use: https://kazusa703.github.io/terms.html
Support: https://kazusa703.github.io/support.html

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |



## Version history (last 3 releases)

### 2.1 — 2026-05-19

・Redesigned the Home screen and overall UI with a calmer, more focused look.
・Improved recommended levels based on your recent play.
・Added clearer session feedback and mistake reasons in result details.
・Improved localization and overall stability.

### 2.0 — 2026-03-31

**英語（アメリカ）:**
```
Now available in English! Redesigned home screen, native ad experience, and smoother gameplay.
```

**ヒンディー語:**
```
अब हिंदी में उपलब्ध! नया होम स्क्रीन डिज़ाइन, बेहतर विज्ञापन अनुभव, और आसान गेमप्ले।
```

### 1.0 — 2026-03-27

No release notes.

## More apps by atsuko imai

- [キーワードメモー忘れる、を価値に変える](https://appshunter.io/ios/app/id6749497390)
- [aikotoba3](https://appshunter.io/ios/app/aikotoba3/id6757985811)
- [PersonalRhythm](https://appshunter.io/ios/app/personalrhythm/id6758055088)
- [Kyokun — Lessons from Mistakes](https://appshunter.io/ios/app/kyokun-lessons-from-mistakes/id6758373650)
- [Soko - Place-Based Tasks](https://appshunter.io/ios/app/soko-place-based-tasks/id6758879585)
- [JustRuler - 実寸定規](https://appshunter.io/ios/app/justruler/id6758887849)

All apps by atsuko imai: https://appshunter.io/developer/1830783417

---

*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 2026-06-11.*