# ReadFlow vs Fish Reading

The clearest difference is in-app purchases: Fish Reading at none against ReadFlow's 3. Fish Reading also leads on iOS requirement (16.6 vs 26.0). ReadFlow's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. ReadFlow sells 3 in-app purchases, starting at $0.99 per month. Fish Reading asks for nothing beyond the download.

ReadFlow ships an update every 10 days, Fish Reading every 3 weeks. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | ReadFlow | Fish Reading |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/readflow-epub-and-pdf-reader/id6447425350/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 15 MB | 179 MB |
| Requires iOS | 26.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | +4 | 17+ |
| Developer | [实 许](https://appshunter.io/developer/681075194) | [宇 方](https://appshunter.io/developer/1813316739) |

## What reviewers say

### ReadFlow

[App page](https://appshunter.io/ios/app/readflow-epub-and-pdf-reader/id6447425350)

This app transforms PDF documents into a comfortable reading experience on small screens. It offers text reflow, customization options for fonts and themes, and iCloud sync for seamless access across devices. Enjoy reading PDFs as easily as other ebook formats.

**Highlights:** PDF text reflow for mobile, Customizable fonts and themes, Import custom font files, iCloud sync, PDF file cropping, Metadata editing, Generate and share reflowed text

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReadFlow Pro 1x | $0.99 | per month |
| ReadFlow Pro 12x | $9.99 | per year |
| ReadFlow Pro ∞ | $19.99 | 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 ReadFlow free?

ReadFlow 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 ReadFlow or Fish Reading have ads?

Fish Reading shows ads; ReadFlow does not.

### Which is updated more often, ReadFlow or Fish Reading?

ReadFlow ships an update every 10 days, and Fish Reading every 3 weeks. Most recently, ReadFlow was updated on November 7, 2026 and Fish Reading on November 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.*