# Book Isle — NAS OPDS Calibre library

> E-book reader for private libraries, connecting to NAS, WebDAV, SMB, OPDS, and Calibre. (iPhone/iPad app by Anyi County Bingzhiyi Trading Co., Ltd..)

- Source: https://appshunter.io/ios/app/book-isle/id6766198898 (this page in markdown: same URL + `.md`)
- Developer: [Anyi County Bingzhiyi Trading Co., Ltd.](https://appshunter.io/developer/1544707793)
- Category: Utilities, Lifestyle
- Price: $0.99 with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings · 33 written reviews indexed
- Age rating: 9+
- Requires: iOS 15.6 · 50 MB
- Languages: American English, Japanese, Korean, Russian, Chinese (Simplified, China)
- Released: 2026-05-12
- Data updated: 2026-09-09
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/book-isle/id6766198898/reviews.md

## What is Book Isle?

Book Isle is an e-book reader designed for personal private libraries. You can connect your iPhone and iPad to your own NAS, WebDAV, SMB, OPDS, or Calibre library, import, browse, search, download, and read local and remote books. The app does not provide an online bookstore, does not host or distribute book content, and your book files are still managed by your local device or your own private library.

Main functions:

- Private library connection: Supports WebDAV, SMB, OPDS, Calibre Content Server, and Calibre metadata.db.
- Multi-format bookshelf: Supports the import, management, and reading of TXT, EPUB, PDF, Markdown, HTML, FB2, RTF, DOCX, CBZ, and common audiobook formats; MOBI, AZW, AZW3, CBR, DJVU can be imported, managed, filtered, and synchronized. It is recommended to convert them to EPUB, PDF, or CBZ for reading.
- Local reading experience: Supports bookshelf grid/list, sorting, tagging, rating, reading status, full-text search, bookmarking, notes, highlighting, book excerpt cards, and reading statistics.
- Remote reading and downloading: Browse private libraries from NAS, OPDS, or Calibre, download or stream supported book formats on demand.
- Private synchronization: Synchronize reading progress, book metadata, notes, highlights, tags, reading statistics, and reading settings through the WebDAV directory you have configured.
- Privacy and security: No self-built account system; supports Face ID app lock; book files will not be automatically uploaded to our servers due to synchronization function.

ShuYu is suitable for readers who already have NAS, Calibre, WebDAV directories, or OPDS book sources, allowing them to manage their private book collections with a quiet and reliable reader.

Subscription and purchase instructions:

Bibliophile Pro offers monthly and annual memberships with automatic renewal, as well as a one-time purchase for a permanent membership. After activation, users can enjoy member-only features such as browsing, searching, downloading, and remote reading of private libraries via NAS/WebDAV/SMB, OPDS, Calibre, as well as private WebDAV synchronization.

Monthly and annual memberships are auto-renewable subscriptions on the App Store. After confirming your purchase, the fee will be deducted from your Apple ID account; the subscription will automatically renew before the end of the current period, unless you turn off auto-renewal at least 24 hours before the end of the current subscription period; the renewal fee will be confirmed and deducted by Apple within 24 hours before the end of the current period. You can manage or cancel your subscription in iOS Settings > Apple ID > Subscriptions, or open the App Store subscription management page from the in-app membership page. After canceling your subscription, you can still use the membership benefits until the end of the current paid period.

The actual price, trial, promotions, and available items are subject to the display on the App Store purchase confirmation page. Refunds are processed by Apple according to its rules. After membership expires, is cancelled, is refunded, or the transaction is revoked, the remote library and private sync features that require membership will be locked; downloaded books, local reading, local notes, and local shelf management can still be used.

The specific agreement is as follows:
Terms: https://sobison.github.io/nasbook/auto-renewable-subscription-terms.html
membership: https://sobison.github.io/nasbook/membership-agreement.html
Privacy: https://sobison.github.io/nasbook/privacy-policy.html

## Key features

- Connect to NAS, WebDAV, SMB, OPDS, Calibre
- Import and manage multiple book formats
- Full-text search and bookmarking
- Remote reading and downloading
- Private synchronization of reading progress
- Face ID app lock for privacy

## Pricing and in-app purchases

Base price: $0.99.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly membership | $0.99 | per month |
| Annual Membership | $2.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Permanent member | $7.99 | one-time |


## Recent user reviews (10 of 33)

All indexed reviews: https://appshunter.io/ios/app/book-isle/id6766198898/reviews.md

### 1/5 — 骗人的东西！

*2026-06-29*

扫描远端书库需要购买会员！ 也不在说明里面说清楚

### 5/5 — 无广告，界面清爽干净

*2026-06-14*

可以自动扫描局域网的 nas 设备，很方便

### 5/5 — 能连接nas webdav真是太好了

*2026-06-14*

收集了很多各种格式的电子书，总算能看了，推荐

### 4/5 — Заслуживает вниания

*2026-06-11*

Главная претензия к оптимизации (на iPad 9), приложение при открытии/изменении настроек будто глючит, приходится ждать около 5 секунд, аналогично работает и интерфейс, и добавление книг… реально секунд десять открывает обычную книгу (4 MB). Но ведь это просто читалка, которая должна буквально «летать»… Работает намного хуже моей бесплатной читалки. По функционалу также ничем не лучше. Единственное отмечу интерфейс, он действительно приятный, но подтормаживания сводят на нет все желание пользоваться приложением. 

UPD: После обновления 1.04 кажется стало чуть лучше, но возможно это самовнушение. Надеюсь разработчики не забросят приложение, и в итоге, как я и писал ранее, оно действительно будет «летать». Желаю им успехов!

UPD: После обновления 1.05 точно стало лучше, пропали эти ужасные подвисания. На первый взгляд все работает плавно. Пока что однозначно поднимаю оценку до «хорошо». Но заметил другую неприятность - отсутствует или я не нашел как изменить правила переноса слов. Сейчас он совершенно рандомно может разбить слово, и перенести даже одну букву, причем без всяких обозначений. Хотелось бы видеть как настройку самого правила (переносить часть слова или нет), так и возможность настроить как именно он переносит (однозначно не хватает опции переноса через тире по правилам языка).
Максимальную оценку не ставлю, сперва понаблюдаю еще…

### 5/5 — 很方便

*2026-06-10*

使用方法简单 界面设计非常简洁 
尤其可以使用服务器添加自己的私人书库

### 5/5 — 这是一个本地阅读浏览器

*2026-06-08*

没有广告弹窗。自己下载书后就可以使用了，开发者技术大佬，大家放心使用。希望越来越好。虽然我现在年纪大了不怎么看小说了。不过偶尔看看还是会的。

### 3/5 — Не оправдало ожиданий

*2026-06-06*

Главная претензия к оптимизации (на iPad 9), приложение при открытии/изменении настроек будто глючит, приходится ждать около 5 секунд, аналогично работает и интерфейс, и добавление книг… реально секунд десять открывает обычную книгу (4 MB). Но ведь это просто читалка, которая должна буквально «летать»… Работает намного хуже моей бесплатной читалки. По функционалу также ничем не лучше. Единственное отмечу интерфейс, он действительно приятный, но подтормаживания сводят на нет все желание пользоваться приложением. 

UPD: После обновления 1.04 кажется стало чуть лучше, но возможно это самовнушение. Надеюсь разработчики не забросят приложение, и в итоге, как я и писал ранее, оно действительно будет «летать». Желаю им успехов!

### 5/5 — 简洁

*2026-05-30*

很喜欢这种不托管书籍、不搞在线书城的阅读器，所有书籍都存在自己的私有书库，安全感拉满。App本身没有花里胡哨的东西，加载快、翻页顺滑，用起来特别舒服，开发者的用心能感受到！

### 5/5 — 太好用了

*2026-05-30*

rt

### 5/5 — 支持一下

*2026-05-29*

刚下载体验了一下，页面比较简洁，没有太多杂乱的东西。支持私有书库连接这一点挺实用，功能方向也比较明确，期待后续继续优化。

## Frequently asked questions about Book Isle

### What book formats does Book Isle support?

Book Isle supports a wide range of formats including TXT, EPUB, PDF, Markdown, HTML, FB2, RTF, DOCX, CBZ, and common audiobook formats. MOBI, AZW, AZW3, CBR, and DJVU can also be imported, managed, and synchronized, though conversion to EPUB, PDF, or CBZ is recommended for reading.

### Can I read books offline with Book Isle?

Yes, Book Isle is designed for personal private libraries. You can import and download books from your connected sources to your local device, allowing for offline reading of your imported collection.

### Does Book Isle offer a free trial for its premium features?

The subscription details mention monthly and annual memberships, as well as a one-time purchase for permanent membership. Specific trial periods are subject to the App Store display at the time of purchase confirmation.

### How do I cancel my Book Isle subscription?

You can manage or cancel your subscription by going to iOS Settings > Apple ID > Subscriptions, or by accessing the App Store subscription management page from within the app's membership section. Your membership benefits will remain active until the end of the current paid period after cancellation.

### Is Book Isle safe for children?

Book Isle has an age rating of 9+, indicating it is suitable for users aged 9 and above. The app also offers a Face ID app lock for enhanced privacy and security of your book files.

### How often is Book Isle updated?

The latest version of Book Isle is 1.0.5, and it was last updated on June 9, 2026. While specific update frequency isn't detailed, this indicates active development and maintenance.

### Does Book Isle have ads?

No, Book Isle does not have advertisements. The app is free to download and offers optional in-app purchases for premium features.

### What devices are compatible with Book Isle?

Book Isle is compatible with iPhone, iPad, and iPod devices, allowing you to manage and read your e-book collection across your Apple ecosystem.

## Version history (last 5 releases)

### 1.0.9 — 2026-08-25

1. Add header and footer settings to the reader
2. iOS 26 and above models that support Apple Intelligence will add relevant AI functions
3. Fix known issues
4. Optimize user experience

### 1.0.8 — 2026-08-18

1. Fix the issue of 404 content appearing when reading some books in the library
2. Fix known issues

### 1.0.7 — 2026-08-12

1. Increasing the library can only be achieved through the anti duplication mechanism
2. The issue of some book libraries being unusable
3. Fix the issue of missing words in pad reading

### 1.0.6 — 2026-07-21

1. Fix the issue where some NAS formats cannot be read
2. Fix the issue of stuttering when switching to the bookshelf
3. Fix known issues
4. Improve other functions

### 1.0.5 — 2026-06-09

1. Add RSS functionality
2. Fix some issues with the display of chapter and table of contents in EPUB files
3. Improve the functions related to paper books

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*