# CHMate+ vs BookThoughts

The clearest difference is price: BookThoughts at Free against CHMate+'s $9.99. BookThoughts also leads on iOS requirement (13.4 vs 26.0). CHMate+'s advantage is update cadence (fortnightly vs every 6 weeks) and chart position (#140 vs unranked). On ads, in-app purchases and device support there is nothing between them.

BookThoughts is free to download; CHMate+ costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CHMate+ ships an update fortnightly, BookThoughts every 6 weeks. The most recent releases landed on October 19, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | CHMate+ | BookThoughts |
| --- | --- | --- |
| 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 | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Free | — |
| Best chart rank | **#140** | — |
| Size | 51 MB | 46 MB |
| Requires iOS | 26.0 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [贤安 陈](https://appshunter.io/developer/318015371) | [婷雅 李](https://appshunter.io/developer/1729964855) |

## What reviewers say

### CHMate+

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

**Currently charting:** #140 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


### BookThoughts

[App page](https://appshunter.io/ios/app/bookthoughts/id6478048154)

**In-app purchases:** none


## Frequently asked questions

### Is CHMate+ free?

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

### Is BookThoughts free?

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

### Do CHMate+ or BookThoughts have ads?

Neither CHMate+ nor BookThoughts shows ads.

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

CHMate+ ships an update fortnightly, and BookThoughts every 6 weeks. Most recently, CHMate+ was updated on October 19, 2026 and BookThoughts on October 3, 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.*