# CHM+ vs Fish Reading

The clearest difference is in-app purchases: Fish Reading at none against CHM+'s 1. CHM+'s advantage is update cadence (every 6 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CHM+ sells 1 one-off in-app purchase. Fish Reading asks for nothing beyond the download.

CHM+ ships an update every 6 weeks, Fish Reading every 4 months. The most recent releases landed on September 26, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | CHM+ | Fish Reading |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/chm-plus-chm-document-reader/id6745147168/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 179 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [俊锋 仝](https://appshunter.io/developer/1209824000) | [宇 方](https://appshunter.io/developer/1813316739) |

## What reviewers say

### CHM+

[App page](https://appshunter.io/ios/app/chm-plus-chm-document-reader/id6745147168)

This app provides a streamlined way to read CHM documents on iOS devices. It offers quick import from local storage and iCloud, fast opening of large files, and efficient chapter navigation. Enjoy a smooth reading experience with support for multiple encodings.

**Highlights:** Quick document import (local storage, iCloud), Fast opening of large CHM files, Table of contents chapter switching, Multi-screen collaboration on iPad, Support for multiple encoding types, Smooth reading experience

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CHM Pro | $4.99 | one-time |


### Fish Reading

[App page](https://appshunter.io/ios/app/fish-reading/id6752594482)

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

**In-app purchases:** none


## Frequently asked questions

### Is CHM+ free?

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

### Is Fish Reading free?

Fish Reading is free to download, with no in-app purchases.

### Do CHM+ or Fish Reading have ads?

Both CHM+ and Fish Reading show ads.

### Which is updated more often, CHM+ or Fish Reading?

CHM+ ships an update every 6 weeks, and Fish Reading every 4 months. Most recently, CHM+ was updated on September 26, 2026 and Fish Reading on September 21, 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.*