# 無料脳内メーカー vs 診断for鬼滅の刃(きめつのやいば)

The clearest difference is ads: 無料脳内メーカー at none against 診断for鬼滅の刃(きめつのやいば)'s shown. 無料脳内メーカー also leads on iOS requirement (8.0 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 8 months). On price, in-app purchases and device support there is nothing between them.

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

無料脳内メーカー ships an update every 8 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 21, 2026 respectively.

## The numbers

| Metric | 無料脳内メーカー | 診断for鬼滅の刃(きめつのやいば) |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 86.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 6 days** |
| Monetization | — | Free |
| Size | 53 MB | 83 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [rakudoor](https://appshunter.io/developer/312646915) | [colabom](https://appshunter.io/developer/1501285294) |

## What reviewers say

### 無料脳内メーカー

[App page](https://appshunter.io/ios/app/id896675838)

**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 無料脳内メーカー free?

無料脳内メーカー 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 無料脳内メーカー 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; 無料脳内メーカー does not.

### Which is updated more often, 無料脳内メーカー or 診断for鬼滅の刃(きめつのやいば)?

無料脳内メーカー ships an update every 8 months, and 診断for鬼滅の刃(きめつのやいば) every 6 days. Most recently, 無料脳内メーカー was updated on October 15, 2026 and 診断for鬼滅の刃(きめつのやいば) on October 21, 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.*