# CHMate: EPUB & CHM Reader — user reviews

> 195 indexed App Store user reviews of CHMate by 贤安 陈, rated 3.60/5 from 20 ratings.

- Source: https://appshunter.io/ios/app/chmate-epub-and-chm-reader/id335157929/reviews
- App overview in markdown: https://appshunter.io/ios/app/chmate-epub-and-chm-reader/id335157929.md
- Rating breakdown: 5★ 10 · 4★ 3 · 3★ 1 · 2★ 2 · 1★ 4

## What do users think of CHMate?

Overall sentiment: mixed

**Pros**

- 👍 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

**Cons**

- 🐛 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

**Commonly reported bugs**

- App crashes when searching CHM files
- Crashes when using tap-hold for bookmarking
- Highlighting functionality broken after iOS updates
- Notes and bookmarks not saving properly
- Highlights disappear or move between chapters
- App crashes on startup or when opening files
- Table of contents index expansion broken
- Custom fonts blocked after iOS 14.5 update
- Files not accessible via iCloud or Dropbox
- Missing icons after updates
- Images display as half-dark or missing
- Text formatting changes not visible without page reload
- First line spacing issues

**Most requested features**

- Dark mode and additional color themes (Sepia)
- Book cover display instead of text-only library view
- PDF support
- Text-to-speech functionality
- Better pagination options
- iPad Pro resolution support
- iOS multi-window support
- Better bookmark functionality
- Separate highlighting and annotation tools
- Support for Cyrillic and Arabic text encoding
- Collection/folder organization for multiple files
- Zip file support for documentation sets

## Newest reviews (10 of 195)

### 2/5 — 以前的版本更好

*2023-06-06*

当前版本搜索无法跨页翻找

**Developer response:** 您好，感谢您的反馈。请试试全书搜索（右上角第二个图标），跨页没有问题。

### 4/5 — CH Mate custom fonts

*2021-05-13*

iOS 14.5 update is blocking custom fonts in CH Mate app. How we can fix this problem. Please update the app. Thanks

**Developer response:** We've fixed this issue on 7.x.

### 4/5 — 縦書き対応です

*2020-03-01*

縦書き対応で見開き方向指定は非対応です。テキスト主体の本は読みやすいですが画像が入るとレイアウトが崩れるかも。

### 4/5 — Gute CHM Darstellung

*2018-12-31*

Kann nicht klagen, problemlos eine CHM Datei aus Dropbox geholt. Die Darstellung ist gut, eine Suchfunktion ist vorhanden

### 3/5 — Love this for medical books

*2018-09-25*

Update the app for Ios12. Crashes when search used for entire book

### 2/5 — It Won’t Save Any Notes You Make

*2017-11-08*

This app. needs to be updated and bugs fixed. You can no longer make a note on something and have it save your note. Until this gets fixed, the app. isn’t worth the time and money.

### 1/5 — Völlig nutzlos, ...

*2017-05-11*

... wenn sich keine einzige Datei importieren lässt. Konnte das Bearbeiten der Datei gar nicht ausprobieren. Bin sehr enttäuscht!

### 1/5 — Not good

*2017-03-10*

I purchased the full version but I but since upgrading my IPad I cannot get it. I bought it using in-app purchase, this is very bad. All my other apps work fine. PLEASE SEND A SOLUTION.

### 1/5 — Not working

*2017-02-17*

Not working on iPhone 5s

### 5/5 — Super !

*2016-12-05*

Très agréable à travaillé avec du ePub! Merci pour votre bon travail !

## Most critical reviews (10 lowest-rated)

### 1/5 — Enabling iCloud sync will result in immediate and irreversible file deletion

*2025-09-15*

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

### 1/5 — Было одним из лучших…

*2020-06-22*

сейчас проблемы с открытием файлов и поиском по тексту (приложение просто закрывается)

### 1/5 — Читалка не смогла прочитать файл chm.

*2020-05-03*

Читалка не смогла прочитать файл chm. Только содержание книги видно.

### 1/5 — Pay Again?

*2020-05-01*

I've bought the full version years ago, and now they ask to pay again and I cannot restore the full version

### 1/5 — App crashes when search option is used

*2019-03-13*

App crashes when search option is used

### 1/5 — Crashes on search after new iOS update

*2018-10-02*

Cannot search any CHM filed without the app crashing.

### 1/5 — “Error occurred”

*2018-07-04*

Программа не способна открыть файл, который прекрасно читается на компьютере. Также не понимает, что такое «+» для раскрытия ветки оглавления – показывает как картинку!

### 1/5 — Вырви глаз

*2018-05-20*

Ужасная читалка. Масштаб документа съезжает и не масштабируется нормально, оглавление отобразилось не корректно. В другой программе и на компе нет таких трудностей.

### 1/5 — I lost my money!

*2017-09-13*

It doesn't work. The application opens and closes immediately.
Dishonest seller! You should be banned from the iTunes store.

### 1/5 — 最悪

*2017-06-10*

詐欺アプリです

## Most praised reviews (10 highest-rated)

### 5/5 — 搜索功能很给力

*2025-06-20*

如题

### 5/5 — Flexibility with Fonts

*2024-12-13*

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.

### 5/5 — Very useful app!

*2023-09-23*

I've been using this app for years and I was very happy with the update; I think it's the only application of its kind on Apple Srore; Congratulations to the developer who believes in his work and doesn't give up.

### 5/5 — Favorite UI of any reader. Would be nice to have more features

*2023-09-19*

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

### 5/5 — My favorite app for EPUB documents

*2023-07-25*

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

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

### 5/5 — ios上少有的chm格式阅览器

*2023-06-27, version 7.0.3*

ios上少有的chm格式阅览器

### 5/5 — Was my favorite app for EPUB documents

*2023-05-27*

It crashes every time I try to open it. Please help! I used to use this app on a weekly basis. I will have to find a replacement if it can’t stop crashing. This is sad.

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

### 5/5 — Good app.. Could be improved..

*2020-05-29*

It’s a great app, especially when dealing with .chm files. Runs very smoothly on both iPhone and iPad. Some improvements could be done: especially more colour themes such as Sepia (cool for the eyes) and collection views of books (cover page display instead of title of the book and author’s name).

### 5/5 — Works for chm

*2019-01-27*

I read large chm manuals and it displays them well.  Plus it is free.  Thanks for making it.

### 5/5 — Мне понравилось :)

*2017-11-05*

Очень удобная читалка, есть вариант для андройда?) разработчикам спасибо!

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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 2026-08-13.*