# BRAIN PUZZLE ＆ IQ TEST vs 診断for鬼滅の刃(きめつのやいば)

The clearest difference is ads: BRAIN PUZZLE ＆ IQ TEST at none against 診断for鬼滅の刃(きめつのやいば)'s shown. BRAIN PUZZLE ＆ IQ TEST also leads on iOS requirement (7.0 vs 15.0). 診断for鬼滅の刃(きめつのやいば)'s advantage is update cadence (every 6 days vs every 2 months). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BRAIN PUZZLE ＆ IQ TEST ships an update every 2 months, 診断for鬼滅の刃(きめつのやいば) every 6 days. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | BRAIN PUZZLE ＆ IQ TEST | 診断for鬼滅の刃(きめつのやいば) |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 80.0% of reviews | **86.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free | Free |
| Size | 6 MB | 83 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [daisuke kawano](https://appshunter.io/developer/964854037) | [colabom](https://appshunter.io/developer/1501285294) |

## What reviewers say

### BRAIN PUZZLE ＆ IQ TEST

[App page](https://appshunter.io/ios/app/brain-puzzle-iq-test/id964854038)

Explore your brain's structure with engaging puzzles and IQ tests. Discover if your thinking is more emotional or logical and compare your cognitive patterns to historical figures. This app offers a unique way to understand your own mind.

**Highlights:** Brain puzzle challenges, IQ testing, Brain structure analysis, Comparison to historical figures, Emotional vs. logical thinking assessment

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

**In-app purchases:** none


### 診断for鬼滅の刃(きめつのやいば)

[App page](https://appshunter.io/ios/app/for/id1501285295)

This unofficial fan-made app offers various quizzes and AI-powered diagnostics related to the popular anime series. Discover your character type, compatibility, rank, and even generate unique breathing styles, Hashira, Nichirin swords, and haoris.

**Highlights:** Character personality quizzes, Compatibility diagnostics, Rank and disciple quizzes, AI-generated breathing styles, AI-generated Hashira, AI-generated Nichirin swords, AI-generated haoris, Original character storage

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

**In-app purchases:** none


## Frequently asked questions

### Is BRAIN PUZZLE ＆ IQ TEST free?

BRAIN PUZZLE ＆ IQ TEST is free to download, with no in-app purchases.

### Is 診断for鬼滅の刃(きめつのやいば) free?

診断for鬼滅の刃(きめつのやいば) is free to download, with no in-app purchases.

### Do BRAIN PUZZLE ＆ IQ TEST or 診断for鬼滅の刃(きめつのやいば) have ads?

診断for鬼滅の刃(きめつのやいば) shows ads; BRAIN PUZZLE ＆ IQ TEST does not.

### Which is updated more often, BRAIN PUZZLE ＆ IQ TEST or 診断for鬼滅の刃(きめつのやいば)?

BRAIN PUZZLE ＆ IQ TEST ships an update every 2 months, and 診断for鬼滅の刃(きめつのやいば) every 6 days. Most recently, BRAIN PUZZLE ＆ IQ TEST was updated on October 15, 2026 and 診断for鬼滅の刃(きめつのやいば) on October 10, 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.*