# Chieumi vs マイ本棚

The clearest difference is in-app purchases: Chieumi at none against マイ本棚's 4. マイ本棚's advantage is update cadence (every 2 weeks vs every 2 months) and iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. マイ本棚 sells 4 in-app purchases, starting at $0.99 per month. Chieumi asks for nothing beyond the download.

Chieumi ships an update every 2 months, マイ本棚 every 2 weeks. The most recent releases landed on October 27, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Chieumi | マイ本棚 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 52 MB | 40 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KOSEI PUBLISHING CO.](https://appshunter.io/developer/1626942067) | [KAZUNORI WAKAMATSU](https://appshunter.io/developer/1721880240) |

## What reviewers say

### Chieumi

[App page](https://appshunter.io/ios/app/chieumi/id1626941855)

**Features:** Vision Pro support

**In-app purchases:** none


### マイ本棚

[App page](https://appshunter.io/ios/app/id6503654432)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン（1ヶ月） | $0.99 | per month |
| プレミアムプラン（半年） | $2.99 | per 6 months |
| プレミアムプラン（年間） | $11.99 | per year |
| プレミアムプラン（買切り） | $19.99 | one-time |


## Frequently asked questions

### Is Chieumi free?

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

### Is マイ本棚 free?

マイ本棚 is free to download, with in-app purchases available.

### Do Chieumi or マイ本棚 have ads?

Neither Chieumi nor マイ本棚 shows ads.

### Which is updated more often, Chieumi or マイ本棚?

Chieumi ships an update every 2 months, and マイ本棚 every 2 weeks. Most recently, Chieumi was updated on October 27, 2026 and マイ本棚 on November 9, 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.*