# ChmPlus Pro vs 海螺笔记

The clearest difference is review sentiment: 海螺笔记 at 100% against ChmPlus Pro's 54%. 海螺笔记 also leads on price (Free vs $6.99) and update cadence (every 3 days vs every 9 days). ChmPlus Pro's advantage is iOS requirement (11.0 vs 15.5). On ads, in-app purchases and device support there is nothing between them.

海螺笔记 is free to download; ChmPlus Pro costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ChmPlus Pro ships an update every 9 days, 海螺笔记 every 3 days. The most recent releases landed on October 16, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | ChmPlus Pro | 海螺笔记 |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[2.7 (9 ratings)](https://appshunter.io/ios/app/chmplus-pro-chmepub-reader/id441521818/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 54.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Monetization | Paid | **Free** |
| Size | 10 MB | 9 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [兰桂 吴](https://appshunter.io/developer/433671404) | [椿杰 周](https://appshunter.io/developer/1348681110) |

## 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


### 海螺笔记

[App page](https://appshunter.io/ios/app/id1638167076)

This app helps you manage and organize your notes from various platforms, fostering interconnected thoughts and deep reflection. It offers daily review features and offline access, allowing you to revisit and refine your ideas anytime, anywhere.

**Highlights:** Cross-platform note aggregation, Idea organization and interconnection, Deep thinking and reflection tools, Daily note review, Offline access for mobile and desktop, High-fidelity note style replication

**In-app purchases:** none


## Frequently asked questions

### Is ChmPlus Pro free?

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

### Is 海螺笔记 free?

海螺笔记 is free to download, with no in-app purchases.

### Do ChmPlus Pro or 海螺笔记 have ads?

Neither ChmPlus Pro nor 海螺笔记 shows ads.

### Which is updated more often, ChmPlus Pro or 海螺笔记?

ChmPlus Pro ships an update every 9 days, and 海螺笔记 every 3 days. Most recently, ChmPlus Pro was updated on October 16, 2026 and 海螺笔记 on October 5, 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.*