Torrossa Reader vs Thorium Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Torrossa Reader
Read digital texts in epub format with this application. It's designed for academic study and personal reading, focusing on humanities and social sciences. The app supports both protected and unprotected epub files.
- EPUB format support
- Readium LCP protection
- Academic and personal reading
- Focus on humanities and social sciences
- Supports unprotected epubs
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The new Torrossa Reader app for texts in epub format. Torrossa Reader is the new reading app for Torrossa digital bookstore, an essential resource for university research, academic study and personal reading with a focus on the humanities and social sciences. Torrossa Reader is based on Readium LCP, a new open source security technology, and allows you to read epubs that are both Readium LCP protected or without protection.
Thorium Reader
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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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.
Screenshots
Verdict
The clearest difference is review sentiment: Thorium Reader at 38% against Torrossa Reader's 0%. Thorium Reader also leads on update cadence (every 3 weeks vs every 4 months). Torrossa Reader's advantage is device support (4 vs 2) and iOS requirement (14.0 vs 26.1). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Torrossa Reader ships an update every 4 months, Thorium Reader every 3 weeks. The most recent releases landed on September 30, 2026 and September 28, 2026 respectively.
| Parameter | Torrossa Reader | Thorium Reader |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.6 (11 ratings) — better |
| Positive reviews | 0.0% of reviews | 37.5% of reviews — better |
| Number of ratings | — | 11 — better |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 26.1 |
| Further details — not scored | ||
| Size | 12 MB | 46 MB |
| Age rating | 4+ | 17+ |
| Developer | Casalini libri S.p.A. | Readium |
Customer experience
Torrossa Reader
Thorium Reader
In-app purchases
Torrossa Reader
No in-app purchases
Thorium Reader
No in-app purchases
Questions
Is Torrossa Reader free?
Is Thorium Reader free?
Do Torrossa Reader or Thorium Reader have ads?
Which is updated more often, Torrossa Reader or Thorium Reader?
Other comparisons
