# CHMate+: EPUB & CHM Reader — Search, annotate, read offline

> EPUB and CHM eBook reader with organization, bookmarking, and sharing features. (iPhone/iPad app by 贤安 陈.)

- Source: https://appshunter.io/ios/app/chmate-plus-epub-and-chm-reader/id324516521 (this page in markdown: same URL + `.md`)
- Developer: [贤安 陈](https://appshunter.io/developer/318015371)
- Category: Books, Utilities
- Price: $9.99
- Rating: 3.80/5 from 8 App Store ratings · 230 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 7 MB
- Languages: Korean, German (Germany), American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan), Brazilian Portuguese, French (France)
- Released: 2009-07-31
- Data updated: 2026-09-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/chmate-plus-epub-and-chm-reader/id324516521/reviews.md

## What is CHMate+?

Most e-readers are bloated with monthly subscription traps, intrusive ads, and clumsy formatting.
CHMate brings the quiet focus and tactile elegance of a real book back to your screen.
Native EPUB and CHM reader with rich typography customization, instant search, and paper themes.
Trusted by readers for over a decade, now rebuilt natively for modern iOS.
Pay once, own forever. Full unlimited access with no subscriptions.

CHMate+ is a local EPUB and CHM reader for iPhone and iPad. Import the books and documents you already own, arrange them into a library you enjoy, and read each one in the way that suits it best.

CRAFTED FOR FOCUSED READING
• Paper Texture & Themes: Curated paper backgrounds, customizable fonts, line spacing, margins, and dark mode
• Distraction-Free: Clean interface designed to put nothing between you and the text
• Tactile Gestures: Smooth chapter transitions and fluid page-turning that respect your reading rhythm

DUAL FORMAT POWER: EPUB & CHM
• EPUB: Perfect for literature, novels, and reflowable publications
• CHM & MHT: Read technical documentation, programming references, and compiled help manuals with structured tables of contents

POWERFUL, PRIVATE UTILITIES
• Instant Search: Lightning-fast full-text search across chapters
• Highlights & Notes: Capture the quotes that move you and review annotations easily
• iCloud Theme Sync: Seamlessly sync your typography themes across your devices via CloudKit
• Local Wi-Fi Transfer: Drop books directly from your computer browser to your device over Wi-Fi without cables

HONEST, ONE-TIME PURCHASE
• Full access and unlimited bookshelf included from the start
• No in-app purchases. No recurring subscriptions.
• No ads. No tracking.

## Key features

- 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

## Chart rankings

- #143 in Top Paid · Book (US App Store)

## What do users think of CHMate+?

Overall sentiment: positive

**Pros**

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

**Cons**

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

**Commonly 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

**Most 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

## Recent user reviews (10 of 230)

All indexed reviews: https://appshunter.io/ios/app/chmate-plus-epub-and-chm-reader/id324516521/reviews.md

### 4/5 — Good reader better than apple book and it's value your data and privacy and it's lite in size 👍

*2025-06-15*

Add some Ai features that could summarize the book it will be a game changer for many users 👍👍

### 5/5 — Good

*2020-07-11*

Все хорошо, отображение и чтение. Из минусов, в заголовке не отображает кириллицей названия глав. 
Разработчики не бросайте приложение!

### 3/5 — Нет поддержки кириллицы...

*2019-09-07*

Реализуйте пож-та поддержку кирилиццы.

### 1/5 — Some crushes

*2018-10-24*

Not searching in whole documents when the book is large ( 5000 page ) like Nelson textbook of pediatric

### 2/5 — Не решают запросы

*2018-06-01*

В одном из очень старых апдейтов испортили вид открытия справки Майкрософт - на телефоне она перестала открываться, масштабируясь до экрана, и каждый раз приходится в настройках щёлкать Extra Text Formatting туда и обратно, только тогда масштаб становится нормальным. Раздражает неимоверно. В добавок к этому в той же справке третий уровень иерархии кликом на втором после Collapse all не раскрывается вообще, только через Expand All, что тоже адски неудобно. Писала и про первое, и про второе - за два года исправлений так и не вышло. В общем, поддержка у приложения отвратительная, испорченное не исправляют.

### 5/5 — Great EPub CHM Reader

*2018-04-29*

Love this app!

### 3/5 — Precisa consertar a opção de notas

*2017-11-23*

Quando coloco uma nota não consigo ver as primeiras linhas e nem quando eu as acesso consigo ver oque esta escrito

### 4/5 — ios10になってから変

*2016-09-21*

とても具合が良くて 最高だったんですが
注釈のところカーソルが出ない
非常に困る   なんとかしてください！

### 3/5 — Good app

*2016-09-18, version 6.8.7*

I like this app in that I am able to read the .chm books I have, however some of the functionality needs work. The buttons on the top that are supposed to allow you to bookmark pages etc, are hidden beneath the page and not accessible. With some clean up of function I would give it a higher rating.

### 5/5 — 최고

*2016-09-11*

더이상 무슨 말이 필요한가

## Frequently asked questions about CHMate+

### What kind of eBooks can I read with this app?

This app is designed to read eBooks in EPUB and CHM formats. It offers a comprehensive reading experience for these specific file types, allowing you to access and enjoy your digital library.

### What are the key features for organizing and reading my books?

You can organize your CHM documents into personal collections that sync across devices via iCloud. The app allows you to add bookmarks and notes to your favorite passages, highlight text, and search for specific words or phrases within your books.

### Is this app free to use?

Yes, the application is available for free. There are no in-app purchases or advertisements mentioned, indicating a completely free user experience.

### How can I add files to the app?

You can add files to the app using a desktop web browser or through iTunes File Sharing. This provides flexible options for transferring your EPUB and CHM eBooks to the application for reading.

### Can I customize my reading experience?

Absolutely. The app offers customizable fonts for headings, body text, and code snippets, along with adjustable line height. You can also easily adjust screen brightness to find the perfect lighting for any environment.

## Version history (last 5 releases)

### 260821.0 — 2026-08-24

New in this update:
• Browse and download curated public-domain books directly in CHMate+, with real covers and visible download progress
• Books appear immediately on your shelf while downloading; pause, resume, retry, or remove them at any time
• Improved Chinese and Japanese typography, including vertical layout, ruby spacing, and progress-preserving layout switches
• Reworked Find in Page so matches stay visible, result counts remain clear, and the keyboard gets out of the way
• A clearer Add Book menu, Recent sorting by default, and many reading and stability fixes

### 25.10.20 — 2025-10-21

- Support for iOS 26

### 8.0.0 — 2024-09-17

- Support for vertical text layout books (Chinese and Japanese)
- Support for iOS 18

### 7.1.0 — 2024-04-21

- Maintenance update

### 7.0.9 — 2024-03-01

- Fix an incorrect setting name

## Apps similar to CHMate+

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Epub Reader -read epub,chm,txt](https://appshunter.io/ios/app/epub-reader-read-epubchmtxt/id1296870631) | 4.5 (11,089) | Free | Books |
| [Manga Viewer - CBZ(CBR) Reader](https://appshunter.io/ios/app/manga-viewer-cbzcbr-reader/id1309007086) | 4.8 (344) | Free | Books |
| [Esh Selihot אש סליחות](https://appshunter.io/ios/app/esh-selihot/id458287740) | 4.0 (1) | $2.99 | Books |
| [Papego](https://appshunter.io/ios/app/papego/id1003230080) | — | Free | Books |
| [RichBook](https://appshunter.io/ios/app/richbook/id576560440) | — | Free | Books |
| [ClassBook : Suivi de lecture](https://appshunter.io/ios/app/classbook-suivi-de-lecture/id630108040) | 4.8 (16) | Free | Books |

## More apps by 贤安 陈

- [WorldABC Blue — The CIA World FactBook](https://appshunter.io/ios/app/worldabc-blue-the-cia-world-factbook/id329676510)
- [CHMate: EPUB & CHM Reader](https://appshunter.io/ios/app/chmate-epub-and-chm-reader/id335157929)
- [The CIA World Factbook](https://appshunter.io/ios/app/the-cia-world-factbook/id412637620)
- [一饭——岁静饭否客户端](https://appshunter.io/ios/app/id541110403)
- [FondFont · System Font Setup](https://appshunter.io/ios/app/fondfont-system-font-setup/id842109099)

All apps by 贤安 陈: https://appshunter.io/developer/318015371

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*