1. Home
  2. 📚 Books
  3. CHMate
CHMate: EPUB & CHM Reader

CHMate: EPUB & CHM Reader

The Reader for Rest of Us

20 ratings
129 reviews
🔧 Utilities
📚 Books
Free
In-App Purchases

Details

  • Released
  • Updated
  • October 29, 2009
  • October 20, 2025

Developer

贤安 陈
✨Promote your app ✨
CHMate: EPUB & CHM Reader screenshot #1 for iPhone
CHMate: EPUB & CHM Reader screenshot #2 for iPhone
CHMate: EPUB & CHM Reader screenshot #3 for iPhone
CHMate: EPUB & CHM Reader screenshot #4 for iPhone
CHMate: EPUB & CHM Reader screenshot #5 for iPhone
iphone
ipad
🧾$9.99
In-App Purchase↘︎
📌Ready
Reviews summary↘︎
⭐129
Reviews↘︎
📝5+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦w/o updates
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

This app offers a robust reading experience for EPUB and CHM eBooks. Organize your library, add bookmarks and notes, and customize your reading environment. Share passages and easily search within your books.

✓Organize eBooks into collections
✓Add bookmarks and notes
✓Customizable fonts and line height
✓Fast scrolling and pagination
✓Highlight favorite passages
✓Built-in search functionality
✓Share quotes with friends
Show original description

What users say

Summarized from real user reviews of CHMate. Based on 20 reviews and a 3.6/5 average, it highlights the 10 positives and 10 negatives reviewers mention most about this Books app.

Positive things

  • 👍Excellent UI/UX design and interface
  • 📖Best CHM file reader available
  • ⚡Fast and smooth performance
  • 🎨Customizable text formatting and fonts
  • 🔍Powerful search functionality
  • 📝Highlighting and annotation features
  • 📚Supports multiple file formats (CHM, EPUB, PDF)
  • 🏆Responsive and attentive developer support
  • 🎯Clean, uncluttered reading experience
  • 💾Efficient file organization and management

Negative things

  • 🐛Frequent crashes and stability issues
  • ⚠️iCloud sync deletes files irreversibly
  • 💰Expensive pricing for functionality
  • 🔄Highlighting and annotations don't persist
  • 📱Compatibility issues with iOS updates
  • 🚫File import/integration problems
  • 🖼️Image rendering issues in some files
  • 🌍Poor support for non-Latin character encoding
  • 💾Files disappear after updates
  • 🔐In-app purchase restoration failures
See all reviews

What's New in CHMate

25.10.20

October 20, 2025

- Support for iOS 26

1

In-App Purchases

$9.99

CHMate Premium

Upgrade to “CHMate Premium” to manage multiple files.

User reviews

Most RecentHighest RatedLowest Rated

Enabling iCloud sync will result in immediate and irreversible file deletion

I backup the file before turn on the sycn yet it recover nothing
H, WH, W

搜索功能很给力

如题
TudounyTudouny

Favorite UI of any reader. Would be nice to have more features

Perhaps I’ll get the paid version at some point, but the UI and the layout of the books that I am reading right now are perfect
burnsac100burnsac100

My favorite app for EPUB documents

After posting a problem I was having, the Developer quickly responded. The problem was solved and now I’m happily loving this app again.
Zoé_NotCordedZoé_NotCorded

Response from developer

Sorry for the inconvenience, please update to 7.0.2 to check if your issue has been resolved. Thanks for your feedbacks.

ios上少有的chm格式阅览器

ios上少有的chm格式阅览器
超爱吃零食的大脸猫超爱吃零食的大脸猫
See 124 more reviews

Developer apps

CHMate+: EPUB & CHM Reader
CHMate+: EPUB & CHM Reader

The Reader for Rest of Us

📚 Books

(8)

$9.99
WorldABC Blue — The CIA World FactBook
WorldABC Blue — The CIA World FactBook

by 贤安 陈

🔍 Reference

(7)

Free
The CIA World Factbook
The CIA World Factbook

World Intel, 2026 Finale Ed.

🔍 Reference

(17)

$1.99
一饭——岁静饭否客户端
一饭——岁静饭否客户端

by 贤安 陈

🌐 Social Networking

(1)

Free
FondFont: Install System Fonts
FondFont: Install System Fonts

Fonts for system-wide use

🔧 Utilities

(70)

$0.99
See developer apps

User experience

🐞

Reported Bugs

13 issues

App crashes when searching CHM files

Bug

Crashes when using tap-hold for bookmarking

Bug

Highlighting functionality broken after iOS updates

Bug

Notes and bookmarks not saving properly

Bug

Highlights disappear or move between chapters

Bug

App crashes on startup or when opening files

Bug

Table of contents index expansion broken

Bug

Custom fonts blocked after iOS 14.5 update

Bug

Files not accessible via iCloud or Dropbox

Bug

Missing icons after updates

Bug

Images display as half-dark or missing

Bug

Text formatting changes not visible without page reload

Bug

First line spacing issues

Bug
✨

Requested Features

12 requests

Dark mode and additional color themes (Sepia)

Feature

Book cover display instead of text-only library view

Feature

PDF support

Feature

Text-to-speech functionality

Feature

Better pagination options

Feature

iPad Pro resolution support

Feature

iOS multi-window support

Feature

Better bookmark functionality

Feature

Separate highlighting and annotation tools

Feature

Support for Cyrillic and Arabic text encoding

Feature

Collection/folder organization for multiple files

Feature

Zip file support for documentation sets

Feature

FAQ

What file formats does CHMate support?

CHMate is designed to read eBooks in EPUB and CHM formats. These are common formats for digital books and documentation.

How can I organize my books with CHMate?

You can organize your CHM documents into personal collections that sync across your devices via iCloud. This helps keep your library tidy and accessible.

Is CHMate free to use?

The base version of CHMate is free, but it allows only one book at a time. For managing and reading multiple books simultaneously, you will need to purchase 'CHMate+' via an in-app purchase or the standalone app.

Can I add notes or highlights to my books?

Yes, CHMate allows you to add bookmarks and notes to your favorite passages. You can also highlight sections and keep your current page updated across devices using iCloud.

How do I add books to CHMate?

You can add files to CHMate using the desktop web browser or through iTunes File Sharing. This provides flexibility in how you transfer your eBooks to the app.