# KokuDoku：読書メモ、管理、活用 vs 10000時間トラッカー

The clearest difference is in-app purchases: KokuDoku：読書メモ、管理、活用 at none against 10000時間トラッカー's 1. KokuDoku：読書メモ、管理、活用 also leads on update cadence (weekly vs fortnightly). 10000時間トラッカー's advantage is iOS requirement (15.1 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. 10000時間トラッカー sells 1 one-off in-app purchase. KokuDoku：読書メモ、管理、活用 asks for nothing beyond the download.

KokuDoku：読書メモ、管理、活用 ships an update weekly, 10000時間トラッカー fortnightly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | KokuDoku：読書メモ、管理、活用 | 10000時間トラッカー |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Size | 28 MB | 38 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chiaki Kobayashi](https://appshunter.io/developer/1865034949) | [Yusuke Kittaka](https://appshunter.io/developer/6771576824) |

## What reviewers say

### KokuDoku：読書メモ、管理、活用

[App page](https://appshunter.io/ios/app/kokudoku/id6757169073)

**In-app purchases:** none


### 10000時間トラッカー

[App page](https://appshunter.io/ios/app/10000/id6771576432)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| サポートプラン | $19.99 | one-time |


## Frequently asked questions

### Is KokuDoku：読書メモ、管理、活用 free?

KokuDoku：読書メモ、管理、活用 is free to download, with no in-app purchases.

### Is 10000時間トラッカー free?

10000時間トラッカー is free to download, with in-app purchases available.

### Do KokuDoku：読書メモ、管理、活用 or 10000時間トラッカー have ads?

Neither KokuDoku：読書メモ、管理、活用 nor 10000時間トラッカー shows ads.

### Which is updated more often, KokuDoku：読書メモ、管理、活用 or 10000時間トラッカー?

KokuDoku：読書メモ、管理、活用 ships an update weekly, and 10000時間トラッカー fortnightly. Most recently, KokuDoku：読書メモ、管理、活用 was updated on October 28, 2026 and 10000時間トラッカー on October 24, 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.*