# MyPDFBooks vs Thorium Reader

The clearest difference is update cadence: MyPDFBooks at daily against Thorium Reader's every 3 weeks. MyPDFBooks also leads on iOS requirement (11.0 vs 26.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MyPDFBooks ships an update daily, Thorium Reader every 3 weeks. The most recent releases landed on September 30, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | MyPDFBooks | Thorium Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.6 (11 ratings)](https://appshunter.io/ios/app/thorium-reader/id6745025189/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 37.5% of reviews |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | **Daily** | Every 3 weeks |
| Monetization | — | Free |
| Size | 23 MB | 46 MB |
| Requires iOS | **11.0** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Miika Harma](https://appshunter.io/developer/1629201496) | [Readium](https://appshunter.io/developer/1232183924) |

## What reviewers say

### MyPDFBooks

[App page](https://appshunter.io/ios/app/mypdfbooks-pdf-reader/id1661658985)

**In-app purchases:** none


### Thorium Reader

[App page](https://appshunter.io/ios/app/thorium-reader/id6745025189)

Organize all your ebooks, comics, and manga in a single app. Customize your reading experience with adjustable text, fonts, and themes. Listen to audiobooks and zoom into visual content with ease.

**Highlights:** Unified bookshelf for all content, Adjustable text size and spacing, Multiple font options, Text-to-speech audio playback, Zoom for comics and manga, Offline dictionary and translation, Import EPUB, PDF, CBZ files

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

**In-app purchases:** none


## Frequently asked questions

### Is MyPDFBooks free?

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

### Is Thorium Reader free?

Thorium Reader is free to download, with no in-app purchases.

### Which is updated more often, MyPDFBooks or Thorium Reader?

MyPDFBooks ships an update daily, and Thorium Reader every 3 weeks. Most recently, MyPDFBooks was updated on September 30, 2026 and Thorium Reader on October 13, 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.*