# UTaipei行動圖書館 vs udn 讀書館

The clearest difference is ads: UTaipei行動圖書館 at none against udn 讀書館's shown. UTaipei行動圖書館 also leads on iOS requirement (11.0 vs 16.0). udn 讀書館's advantage is update cadence (every 6 weeks vs every 18 months). On price, in-app purchases and device support there is nothing between them.

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

UTaipei行動圖書館 ships an update every 18 months, udn 讀書館 every 6 weeks. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | UTaipei行動圖書館 | udn 讀書館 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.5 (8 ratings)](https://appshunter.io/ios/app/udn/id1342153816/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 18 months | **Every 6 weeks** |
| Monetization | — | Ad-supported |
| Size | 21 MB | 63 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [凌網科技股份有限公司, Hyweb Technology Co., Ltd.](https://appshunter.io/developer/419081258) | [udn.com](https://appshunter.io/developer/370132216) |

## What reviewers say

### UTaipei行動圖書館

[App page](https://appshunter.io/ios/app/utaipei/id905854374)

**Features:** macOS Compatibility

**In-app purchases:** none


### udn 讀書館

[App page](https://appshunter.io/ios/app/udn/id1342153816)

Access e-books, magazines, and newspapers from multiple libraries in one app. Enjoy a seamless reading experience with offline capabilities and customizable settings. Borrow and reserve digital content for free.

**Highlights:** Integrates multiple library lending services, Free mobile borrowing of e-books, magazines, newspapers, Offline reading of downloaded content, Supports PDF and EPUB formats, Customizable reading settings (brightness, text size, night mode), Borrow and reserve books with automatic returns

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is UTaipei行動圖書館 free?

UTaipei行動圖書館 is free to download, with no in-app purchases.

### Is udn 讀書館 free?

udn 讀書館 is free to download, with no in-app purchases.

### Do UTaipei行動圖書館 or udn 讀書館 have ads?

udn 讀書館 shows ads; UTaipei行動圖書館 does not.

### Which is updated more often, UTaipei行動圖書館 or udn 讀書館?

UTaipei行動圖書館 ships an update every 18 months, and udn 讀書館 every 6 weeks. Most recently, UTaipei行動圖書館 was updated on November 6, 2026 and udn 讀書館 on November 2, 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.*