# KOZO vs Muse House　公式アプリ

KOZO and Muse House　公式アプリ are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

KOZO ships an update every 31 months, Muse House　公式アプリ every 39 months. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | KOZO | Muse House　公式アプリ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 31 months** | Every 39 months |
| Size | 4 MB | 6 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Naoya Takahashi](https://appshunter.io/developer/1301211980) | [LIFE SUPPORT CO.,LTD.](https://appshunter.io/developer/1634722952) |

## What reviewers say

### KOZO

[App page](https://appshunter.io/ios/app/kozo/id1523961762)

**Features:** macOS Compatibility

**In-app purchases:** none


### Muse House　公式アプリ

[App page](https://appshunter.io/ios/app/muse-house/id6446188376)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KOZO free?

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

### Is Muse House　公式アプリ free?

Muse House　公式アプリ is free to download, with no in-app purchases.

### Do KOZO or Muse House　公式アプリ have ads?

Neither KOZO nor Muse House　公式アプリ shows ads.

### Which is updated more often, KOZO or Muse House　公式アプリ?

KOZO ships an update every 31 months, and Muse House　公式アプリ every 39 months. Most recently, KOZO was updated on October 27, 2026 and Muse House　公式アプリ on October 30, 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.*