Thorium Reader

Thorium Reader

Read it your way

7 ratings
2 reviews
Free

Details

  • Released
  • Updated
  • April 30, 2026
  • May 12, 2026

Features

Thorium Reader screenshot #1 for iPhone
Thorium Reader screenshot #2 for iPhone
Thorium Reader screenshot #3 for iPhone
Thorium Reader screenshot #4 for iPhone
iphone
ipad
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About

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.

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
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What's New in Thorium Reader

1.1

May 12, 2026

For this first post-release build, we're focusing on improving PDF support. • New: Support for search in PDF • New: Now translated in Danish • Update: Improved performances when opening up large PDF files • Fix: We got rid of a bug related to Apple Intelligence when using PDF files

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User reviews

Very promising!

I’ve been looking for a replacement for Readest since they’ve started paywalling some essential features.

So far, I really like Thorium reader! Like a previous user said, highlighting would be a nice feature to have. But, that appears to be in process.

Additionally, I’d like to see scroll mode on iOS and a sync functionality with desktop. Particularly WebDAV.

Overall, I really like what I’m seeing! I do think the mobile app is much more refined design-wise than the desktop app. I find the Mac desktop app (intel) a bit clunky and not very visually appealing.
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Response from developer

Hello, Highlights and scrolling mode for EPUB (it's already available for PDF) are both on our radar for this year. For sync, we'll support OPDS (including progression support) later this year, which will make Thorium Reader compatible with multiple self-hosting solutions. A standalone sync feature is further in the future with no ETA yet since we'd like to ship an Android app before. We'll continue to stick as closely as possible to iOS/iPadOS/macOS to deliver a fully native experience. Thanks, Thorium Reader Team

Promising but could use more tweaks

It has the potential to be great but I need more font options but more importantly, I need a highlighting function.

Response from developer

Hello, Thank you for your feedback. A highlight feature is planned, but we'd like this feature to be interoperable with other reading apps. There's currently an on-going effort to standardize this feature at W3C, we plan on implementing highlight support as soon as the specification becomes stable enough to be implemented (this should be later this year). In terms of font options, is there any particular font or font type that you're looking for? Feel free to contact us at mobile@thoriumreader.com for such feedback as well. Thanks, Thorium Reader Team

FAQ

What types of digital content can Thorium Reader handle?

Thorium Reader supports a wide range of digital content, including ebooks, documents, comics, and manga. You can import files in EPUB, PDF, and CBZ formats.

Can I customize the reading experience in Thorium Reader?

Yes, Thorium Reader offers extensive customization options. You can adjust text size, choose from over 10 fonts, switch between color schemes with themes, and control spacing to suit your preferences.

Does Thorium Reader offer text-to-speech functionality?

Yes, Thorium Reader allows you to listen to any ebook. The app remembers your preference for audio playback, making it convenient to switch between reading and listening.

Is Thorium Reader available on multiple devices?

Thorium Reader is designed for iOS devices, specifically supporting iPhones and iPads. This allows for a consistent reading experience across your Apple mobile devices.

Does Thorium Reader have ads?

No, Thorium Reader is ad-free. As a non-profit dedicated to open standards and literacy, the app focuses on providing an uninterrupted reading experience without advertisements.

Can I use the dictionary and translation features offline in Thorium Reader?

Yes, Thorium Reader includes built-in iOS dictionary and translation features that can be used even when you are offline. This is particularly useful for reading on the go without an internet connection.

How often is Thorium Reader updated?

Thorium Reader was last updated on May 12, 2026, with version 1.1. The developer, EDRLab, is dedicated to open standards, suggesting a commitment to ongoing improvements and support.

What is the age rating for Thorium Reader?

Thorium Reader has an age rating of 4+. This indicates that the app is suitable for children aged 4 and above, with no mature content restrictions.