# CHMate+ vs RichBook

The clearest difference is price: RichBook at Free against CHMate+'s $9.99. RichBook also leads on iOS requirement (14.5 vs 18.0). CHMate+'s advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

RichBook is free to download; CHMate+ costs $9.99 up front. RichBook sells 1 one-off in-app purchase. CHMate+ asks for nothing beyond the download.

CHMate+ ships an update every 2 months, RichBook every 7 months. The most recent releases landed on September 23, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | CHMate+ | RichBook |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[3.8 (8 ratings)](https://appshunter.io/ios/app/chmate-plus-epub-and-chm-reader/id324516521/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | **60.9% of reviews** | 30.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#152** | — |
| Size | 48 MB | 24 MB |
| Requires iOS | 18.0 | **14.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [贤安 陈](https://appshunter.io/developer/318015371) | [sorakaze Inc.](https://appshunter.io/developer/1046448101) |

## What reviewers say

### CHMate+

[App page](https://appshunter.io/ios/app/chmate-plus-epub-and-chm-reader/id324516521)

**Currently charting:** #152 Top Paid · Book (US App Store)

This app provides a robust reading experience for EPUB and CHM eBooks. Organize your library, add bookmarks and notes, and easily search for text. Customize your reading with adjustable fonts and brightness, and share passages with friends.

**Highlights:** Organize files into personal collections, Add bookmarks and notes, Customizable fonts and line height, Built-in search feature, Share quotes with friends, Adjustable screen brightness

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Great CHM reader
- 👍 Smooth navigation
- 👍 Customizable text formatting
- 👍 Useful annotation features
- 👍 Reliable and stable

**What reviewers complain about**

- 🐛 Crashes and freezes after updates
- 🐛 Compatibility issues with some CHM files
- 🔍 Limited search functionality
- 📂 Lack of file management options
- 💰 Expensive for a CHM reader

**Reported bugs**

- Crashes when searching within documents
- Table of contents not syncing with current position
- Highlighting and annotations not working reliably
- Issues with opening and loading certain CHM files

**Requested features**

- Full-text search across documents
- Folder organization for files
- Improved image handling and zooming
- Sync with cloud storage services
- Ability to rename files


### RichBook

[App page](https://appshunter.io/ios/app/richbook/id576560440)

This application allows users to read books and comic archives on multiple devices. It supports PDF files and compressed comic archives like zip and rar. A Bluetooth option in settings is required for use.

**Highlights:** Reads PDF files, Supports zip and rar comic archives, Multi-device compatibility, Requires Bluetooth setting ON, Video tutorial available

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ad | $9.99 | one-time |


## Frequently asked questions

### Is CHMate+ free?

CHMate+ costs $9.99, with no in-app purchases.

### Is RichBook free?

RichBook is free to download, with in-app purchases available.

### Do CHMate+ or RichBook have ads?

RichBook shows ads; CHMate+ does not.

### Which is updated more often, CHMate+ or RichBook?

CHMate+ ships an update every 2 months, and RichBook every 7 months. Most recently, CHMate+ was updated on September 23, 2026 and RichBook on September 8, 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.*