# 長庚醫學eBook vs udn 讀書館

The clearest difference is ads: 長庚醫學eBook at none against udn 讀書館's shown. 長庚醫學eBook also leads on iOS requirement (8.0 vs 16.0). udn 讀書館's advantage is update cadence (every 6 weeks vs every 4 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.

長庚醫學eBook ships an update every 4 months, udn 讀書館 every 6 weeks. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 長庚醫學eBook | 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 4 months | **Every 6 weeks** |
| Monetization | — | Ad-supported |
| Size | 21 MB | 63 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [HamaStar Technology Co., Ltd.](https://appshunter.io/developer/453199183) | [udn.com](https://appshunter.io/developer/370132216) |

## What reviewers say

### 長庚醫學eBook

[App page](https://appshunter.io/ios/app/ebook/id947195121)

**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 長庚醫學eBook free?

長庚醫學eBook 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 長庚醫學eBook or udn 讀書館 have ads?

udn 讀書館 shows ads; 長庚醫學eBook does not.

### Which is updated more often, 長庚醫學eBook or udn 讀書館?

長庚醫學eBook ships an update every 4 months, and udn 讀書館 every 6 weeks. Most recently, 長庚醫學eBook was updated on October 3, 2026 and udn 讀書館 on October 15, 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.*