CHMate: EPUB & CHM Reader

CHMate: EPUB & CHM Reader

Search, annotate, read offline

20 ratings
197 reviews
Free
In-App Purchases

Details

Released
October 29, 2009
Updated
October 29, 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
iphone
iphoneDuo
ipad
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About

Transform your personal ebook files into a comfortable reading experience with a customizable virtual bookshelf. Enjoy tailored typography, import your own fonts, and organize your collection with decorative elements and personal photos. Read EPUB and CHM files offline with powerful search and annotation tools.

✓Customizable virtual bookshelf with ambient lighting
✓Decorate shelves with photos, videos, and ornaments
✓Tailored typography with adjustable fonts and page colors
✓Import custom font files
✓Read EPUB and CHM files offline
✓Full-text search and annotation tools
✓Local Wi-Fi file transfer
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What users say about CHMate

See all reviews
+1

What's New in CHMate

261028.0

October 29, 2026

• Optimized for iPhone Duo. Read one page when flat and two pages when folded. Keep your place as you fold, unfold or rotate your device. • Added reading history with back and forward navigation, making it easier to move between chapters, the table of contents and links within books. • Smoother chapter transitions and opening and closing of the table of contents. Share cards now offer a live appearance preview. • Improved links, search and bookmark saving in large books. Your reading position is preserved when changing the system text size.

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 primarily supports EPUB and CHM files. While the description mentions PDF support, user reviews indicate potential compatibility issues with certain file types, so it's best to confirm with the developer for specific format handling.

How can I import files into CHMate?

You can import files into CHMate using local Wi-Fi transfer directly from your computer's browser. This allows for a direct and convenient way to send your EPUB and CHM files to the app without needing cloud services.

Does CHMate have ads?

No, CHMate is advertised as having no ads. The app is free to download with complete reading features for your current book, and offers a one-time purchase to unlock multiple books.

What is the pricing for CHMate?

CHMate is free to download and offers complete reading features for a single book. To unlock multiple books, there is a one-time in-app purchase. The app explicitly states there are no subscriptions.

How often is CHMate updated?

The latest version of CHMate was released on October 29, 2026, with the last update also on October 29, 2026. This indicates a recent update, though user reviews mention compatibility issues with iOS updates, suggesting potential for ongoing maintenance.

What devices is CHMate compatible with?

CHMate is designed for iOS devices, specifically supporting iPhones and iPads. It also features iCloud theme sync, allowing your custom typography themes to be saved and synced across your Apple devices.

What do users like most about CHMate?

User reviews frequently praise CHMate's excellent UI/UX design, fast and smooth performance, and its powerful customization options for text formatting and fonts. Many also appreciate its functionality as a CHM file reader and its clean reading experience.

What are the main criticisms of CHMate?

User feedback highlights concerns about frequent crashes and stability issues, as well as problems with iCloud sync irreversibly deleting files. Some users also find the pricing expensive for the functionality and report issues with annotations and file import.