# Thorium Reader — Read it your way

> All-in-one ebook, comic, and manga reader with extensive customization. (iPhone/iPad app by Readium.)

- Source: https://appshunter.io/ios/app/thorium-reader/id6745025189 (this page in markdown: same URL + `.md`)
- Developer: [Readium](https://appshunter.io/developer/1232183924)
- Category: Books, Education
- Price: Free
- Rating: 3.90/5 from 9 App Store ratings · 5 written reviews indexed
- Age rating: 17+
- Requires: iOS 26.1 · 45 MB
- Languages: American English, Danish, Estonian, Finnish, French (France), Italian, Lithuanian, Polish, European Spanish, Swedish
- Released: 2026-04-30
- Data updated: 2026-08-28
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/thorium-reader/id6745025189/reviews.md

## What is Thorium Reader?

Looking for an app where you can bring all your ebooks, comics and manga in one place? That’s what we built Thorium Reader for.

Read it your way

Everyone’s different, that’s why we want you to be fully in control:
• Adjust text size, switch between color schemes with themes and control spacing.
• 10+ fonts available, including specialized ones.
• You prefer audio? Listen to any ebook, whenever you want. We’ll remember your preference.
• Zoom into comics, manga and magazines.
• Add bookmarks with notes.
• Use the built-in iOS dictionary and translation features, even offline.
• Tweak your reading experience with reading options.

Bring your own books

A single bookshelf and reading application where you can bring all your content:
• Download free books, borrow from your library or buy from your favorite retailer.
• Support for ebooks, documents, comics and manga.
• Import EPUB, PDF and CBZ files.
• Support for Readium LCP, used by thousands of libraries and retailers.

Thorium Reader is built by EDRLab, a non-profit dedicated to open standards, reading and accessibility.

## Key features

- 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

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/thorium-reader/id6745025189/reviews.md

### 5/5 — Clean interface

*2026-08-24*

Minimal and quite comforting

### 4/5 — New go-to for epubs

*2026-08-23*

Just downloaded it, love the simplicity. Range of choices is just enough without complicating the reading experience. 👍👍

### 1/5 — Third party programs used

*2026-08-14*

I see that there are a lot of third party programs used, among them some from Google. You say some data is collected but not personally linked? Data shared with google? What data? If using google, how much privacy?

**Developer response:** As documented on our App Store page, Thorium Reader only collects anonymous data related to crash reporting and overall usage through Firebase. A link to our privacy policy is also available.

### 4/5 — Very promising!

*2026-07-28*

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.

**Developer response:** 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

### 2/5 — Promising but could use more tweaks

*2026-07-09*

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

**Developer response:** 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

## Frequently asked questions about Thorium Reader

### 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.

## Version history (last 3 releases)

### 1.2 — 2026-08-21

• New: Support for Web catalogs
• New: Download and import files easily from Web catalogs
• New: Support for deep links (add catalogs and publications)
• New: Download manager
• New: You can now separate publications that you’re listening to from the rest using an optional app setting
• New: Translated in Estonian, Lithuanian and Polish

### 1.1 — 2026-05-12

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

### 1.0 — 2026-04-30

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*