# ShuBook X 書僕 vs ISBN

The clearest difference is in-app purchases: ISBN at none against ShuBook X 書僕's 1. ShuBook X 書僕's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. ShuBook X 書僕 sells 1 in-app purchase, starting at $1.49 per 6 months. ISBN asks for nothing beyond the download.

ShuBook X 書僕 ships an update every 6 weeks, ISBN every 4 months. The most recent releases landed on October 20, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ShuBook X 書僕 | ISBN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (12 ratings)](https://appshunter.io/ios/app/shubook-x/id1497625038/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 57.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 172 MB | 16 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Ambibma Ltd.](https://appshunter.io/developer/385897282) | [剑秋 肖](https://appshunter.io/developer/806037264) |

## What reviewers say

### ShuBook X 書僕

[App page](https://appshunter.io/ios/app/shubook-x/id1497625038)

This app offers comprehensive tools for reading, creating, and managing digital books, with advanced Chinese text processing, text-to-speech, and customizable formatting. It supports various file formats and allows for easy book creation and sharing.

**Highlights:** Advanced Chinese text processing (simplified/traditional, horizontal/vertical), Text-to-speech with Mandarin and Cantonese options, Create EPUB books from SOF format, Rich Chinese book sources and web page reading, Customizable book formatting and themes, Library management with sorting and batch operations, Cloud and local file integration for book import

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 半年訂閱 | $1.49 | per 6 months |


### ISBN

[App page](https://appshunter.io/ios/app/isbn/id6449743934)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ShuBook X 書僕 free?

ShuBook X 書僕 is free to download, with in-app purchases available.

### Is ISBN free?

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

### Do ShuBook X 書僕 or ISBN have ads?

ISBN shows ads; ShuBook X 書僕 does not.

### Which is updated more often, ShuBook X 書僕 or ISBN?

ShuBook X 書僕 ships an update every 6 weeks, and ISBN every 4 months. Most recently, ShuBook X 書僕 was updated on October 20, 2026 and ISBN on October 27, 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.*