# ChmPlus Pro vs CHM Reader

The clearest difference is price: CHM Reader at Free against ChmPlus Pro's $6.99. CHM Reader also leads on rating (5.0 vs 2.7). ChmPlus Pro's advantage is in-app purchases (none vs 3) and update cadence (every 9 days vs every 3 weeks). On ads and device support there is nothing between them.

CHM Reader is free to download; ChmPlus Pro costs $6.99 up front. CHM Reader sells 3 in-app purchases, starting at $1.99 per 7 days. ChmPlus Pro asks for nothing beyond the download.

CHM Reader holds the better App Store score, 5.0 against 2.7. Both are backed by a comparable volume of ratings — 9 and 2 respectively. Written reviews complicate that: 54% of ChmPlus Pro's written reviews are positive against 43% of CHM Reader's, so the app with the better star average is not the one people write more warmly about.

ChmPlus Pro ships an update every 9 days, CHM Reader every 3 weeks. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | ChmPlus Pro | CHM Reader |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [2.7 (9 ratings)](https://appshunter.io/ios/app/chmplus-pro-chmepub-reader/id441521818/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chm-reader-read-chm-txt/id6758199572/reviews)** |
| Number of ratings | **9** | 2 |
| Positive reviews | **54.5% of reviews** | 42.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Paid | **Freemium** |
| Size | 10 MB | 19 MB |
| Requires iOS | **11.0** | 16 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [兰桂 吴](https://appshunter.io/developer/433671404) | [灿耿 陈](https://appshunter.io/developer/1688324562) |

## What reviewers say

### ChmPlus Pro

[App page](https://appshunter.io/ios/app/chmplus-pro-chmepub-reader/id441521818)

This app allows you to read and manage various document formats, including CHM and EPUB ebooks. It offers features like highlighting, bookmarking, searching, and file transfer. Secure your documents with a passcode lock and organize your files with ease.

**Highlights:** CHM/EPUB document reading, Highlight, bookmark, and annotate, Document-wide search, Wi-Fi and iTunes file transfer, Passcode lock for files, Support for multiple file types, Create and edit text documents

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Generally good for CHM files
- 🚀 Fast opening of files
- 🔍 Powerful search function
- 📂 Good file organization
- ✨ Clean interface

**What reviewers complain about**

- 🐛 Frequent crashes and freezes
- 🐛 Highlighting issues (not working, disappearing)
- 🐛 Displaying Chinese characters as garbled text (亂碼)
- 🐛 Slow copy/paste and search response
- 🐛 Some CHM files not fully opening

**Reported bugs**

- Chinese characters displayed as garbled text (亂碼)
- Search feature broken for numbers (recent)
- Copying is slow
- App crashes when searching
- Editing text feature removed after update

**Requested features**

- Adjustable font size
- PDF left-right page turning
- EPUB file support
- Expand/collapse table of contents
- Adapt to full-screen displays


### CHM Reader

[App page](https://appshunter.io/ios/app/chm-reader-read-chm-txt/id6758199572)

This app provides a streamlined and efficient way to read CHM and TXT documents. It offers features like smart table of contents navigation, full-text search, adjustable font sizes, and night mode for a comfortable reading experience.

**Highlights:** Professional CHM format support, Smart Table of Contents navigation, Full-text search, Adjustable font size, Night mode, Bookmark collection

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly members | $1.99 | per 7 days |
| Annual Subscription | $4.99 | per year |
| Lifetime Membership | $6.99 | one-time |


## Frequently asked questions

### Is ChmPlus Pro free?

ChmPlus Pro costs $6.99, with no in-app purchases.

### Is CHM Reader free?

CHM Reader is free to download, with in-app purchases available.

### Which has better reviews, ChmPlus Pro or CHM Reader?

CHM Reader is rated higher. ChmPlus Pro averages 2.7 out of 5 from 9 ratings, while CHM Reader averages 5.0 from 2 ratings.

### Do ChmPlus Pro or CHM Reader have ads?

Neither ChmPlus Pro nor CHM Reader shows ads.

### Which is updated more often, ChmPlus Pro or CHM Reader?

ChmPlus Pro ships an update every 9 days, and CHM Reader every 3 weeks. Most recently, ChmPlus Pro was updated on October 16, 2026 and CHM Reader on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*