# 帝國圖書館 vs ReadTime

The clearest difference is review sentiment: 帝國圖書館 at 72% against ReadTime's 0%. 帝國圖書館 also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.0). ReadTime's advantage is update cadence (monthly vs every 7 months). On price, ads and in-app purchases there is nothing between them.

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

帝國圖書館 ships an update every 7 months, ReadTime monthly. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 帝國圖書館 | ReadTime |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **72.2% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Monthly** |
| Monetization | — | Subscription |
| Size | 11 MB | 22 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Shin-ichi Nishimura](https://appshunter.io/developer/404706178) | [Ryosuke Hayashi](https://appshunter.io/developer/1841602798) |

## What reviewers say

### 帝國圖書館

[App page](https://appshunter.io/ios/app/id963604056)

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

**In-app purchases:** none


### ReadTime

[App page](https://appshunter.io/ios/app/readtime-read-to-unlock-apps/id6790185992)

This app encourages reading by allowing users to earn timed access to other apps based on the time spent reading. It features a digital bookshelf, progress tracking, and helps reduce phone addiction by creating a tangible reward for reading.

**Highlights:** Track reading sessions with a timer, Earn coins for reading time, Trade coins for timed app access, Digital bookshelf and book tracker, Progress tracking and reading reports, Reduce phone addiction

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

**In-app purchases:** none


## Frequently asked questions

### Is 帝國圖書館 free?

帝國圖書館 is free to download, with no in-app purchases.

### Is ReadTime free?

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

### Do 帝國圖書館 or ReadTime have ads?

Neither 帝國圖書館 nor ReadTime shows ads.

### Which is updated more often, 帝國圖書館 or ReadTime?

帝國圖書館 ships an update every 7 months, and ReadTime monthly. Most recently, 帝國圖書館 was updated on November 1, 2026 and ReadTime on November 5, 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.*