CHMate: EPUB & CHM Reader

CHMate: EPUB & CHM Reader

Search, annotate, read offline

20 ratings
197 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • October 29, 2009
  • October 5, 2026

Features

CHMate: EPUB & CHM Reader video #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
CHMate: EPUB & CHM Reader screenshot #6 for iPhone
CHMate: EPUB & CHM Reader screenshot #7 for iPhone
CHMate: EPUB & CHM Reader screenshot #8 for iPhone
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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
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What users say

See all reviews

What's New in CHMate

261005.0

October 5, 2026

Choose from six page colors to make reading your own, independently of your typography theme. Use light or dark appearance, or let it follow your device. Fixed page turning by tapping the left or right side when reading horizontal text in paged mode.

More
1

Subscriptions & In-App Purchases

$9.99

CHMate+

Unlock multiple EPUB and CHM books.

User reviews

problem fixed

New update fixed problem of highlight feature and improved UI, which is great

Worsen by update

The text searching became problematic and tiresome to use after update. Text searching do not show the highlighted text properly and user have to scroll on the page to search for the keyword.

Enabling iCloud sync will result in immediate and irreversible file deletion

I backup the file before turn on the sycn yet it recover nothing

搜索功能很给力

如题

Flexibility with Fonts

It’s a simple app, but what makes a big difference for me is being able to use my own fonts and typography instead of being stuck with the built-in ones.

The only thing I feel is missing is a more visual library where you could browse the covers, either in a list or a gallery.

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.