# Passim｜蔵書管理・本棚整理・読書記録 vs Uchiaru?

The clearest difference is in-app purchases: Uchiaru? at none against Passim｜蔵書管理・本棚整理・読書記録's 2. Uchiaru? also leads on update cadence (every 3 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Passim｜蔵書管理・本棚整理・読書記録 sells 2 in-app purchases, starting at $4.99 per month. Uchiaru? asks for nothing beyond the download.

Passim｜蔵書管理・本棚整理・読書記録 ships an update every 3 weeks, Uchiaru? every 3 days. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Passim｜蔵書管理・本棚整理・読書記録 | Uchiaru? |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 73 MB | 55 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MODALAVA](https://appshunter.io/developer/1891578566) | [Hirokazu Nakamura](https://appshunter.io/developer/1896769319) |

## What reviewers say

### Passim｜蔵書管理・本棚整理・読書記録

[App page](https://appshunter.io/ios/app/passim/id6761805831)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Passim Pro Monthly | $4.99 | per month |
| Passim Pro Yearly | $49.99 | per year |


### Uchiaru?

[App page](https://appshunter.io/ios/app/uchiaru/id6771027678)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Passim｜蔵書管理・本棚整理・読書記録 free?

Passim｜蔵書管理・本棚整理・読書記録 is free to download, with in-app purchases available.

### Is Uchiaru? free?

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

### Do Passim｜蔵書管理・本棚整理・読書記録 or Uchiaru? have ads?

Both Passim｜蔵書管理・本棚整理・読書記録 and Uchiaru? show ads.

### Which is updated more often, Passim｜蔵書管理・本棚整理・読書記録 or Uchiaru??

Passim｜蔵書管理・本棚整理・読書記録 ships an update every 3 weeks, and Uchiaru? every 3 days. Most recently, Passim｜蔵書管理・本棚整理・読書記録 was updated on October 1, 2026 and Uchiaru? 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.*