Comparison

Lis vs Thorium Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lis

Enjoy a premium reading experience for all your ebooks and audiobooks, regardless of their source. Customize your reading with various fonts, themes, and spacing options. Sync your progress across devices and use speech synthesis to listen to your books.

Highlights
  • Read ebooks (ePub, PDF)
  • Listen to audiobooks
  • Customizable reading experience
  • Bookmark and annotate
  • Speech synthesis for ebooks
  • Cross-device sync
Features
Read full description

Lisa offers an unrivalled reading experience for all ebooks and audiobooks. Read every kind of editorial genre, from any source (book seller, library or anywhere on the web...), whenever you want. Features: - Read ebooks in ePub, protected with the LCP DRM or not. - Listen to audiobooks, protected by the LCP DRM or not. - Customize your reading experience: choose from a selection of fonts and color themes; change the line spacing or the margin size. - Bookmark and annotate your ebooks. - Use speech synthesis for the app to read aloud your ebooks in ePub format. - Log in to sync your books and readings across devices and resume where you left off. Formats supported: - digital books in ePub and PDF formats - audiobooks in M4B, MP3, MP4, ZIP, ZAB, Audiobook Readium, Audiobook Readium LCP formats If you encounter difficulties or wish to send us your feedback and suggestions, contact us via info@artbookmagazine.com. Good readings

About

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.

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
Read full description

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

Lis4 screens
Thorium Reader4 screens

Verdict

The call

The clearest difference is rating: Lis at 5.0 against Thorium Reader's 3.4. Lis also leads on iOS requirement (15.6 vs 26.1). Thorium Reader's advantage is update cadence (every 3 weeks vs every 3 months) and ratings volume (12 vs 1). On price, review sentiment, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Lis holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Thorium Reader has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 38% of Lis's written reviews are positive against 40% of Thorium Reader's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Lis ships an update every 3 months, Thorium Reader every 3 weeks. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

Scorecard4 real differences · 6 level
Lis versus Thorium Reader: the parameters behind the verdict, then further details
ParameterLisThorium Reader
PriceFreeFree
Rating5.0 (1 ratings) — better3.4 (12 ratings)
Positive reviews38.1% of reviews40.0% of reviews — better
Number of ratings112 — better
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better26.1
Further details — not scored
Size86 MB46 MB
Age rating4+17+
DeveloperArt Book MagazineReadium

Customer experience

Lis

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews21 reviews
Positive38.1%
Neutral4.8%
Negative57.1%

Thorium Reader

All ratings12 ratings
Positive58.3%
Neutral8.3%
Negative33.3%
Written reviews10 reviews
Positive40.0%
Neutral10.0%
Negative50.0%

In-app purchases

None

Lis

No in-app purchases

None

Thorium Reader

No in-app purchases

Questions

Is Lis free?
Lis 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 has better reviews, Lis or Thorium Reader?
Lis is rated higher. Lis averages 5.0 out of 5 from 1 ratings, while Thorium Reader averages 3.4 from 12 ratings.
Do Lis or Thorium Reader have ads?
Neither Lis nor Thorium Reader shows ads.
Which is updated more often, Lis or Thorium Reader?
Lis ships an update every 3 months, and Thorium Reader every 3 weeks. Most recently, Lis was updated on October 7, 2026 and Thorium Reader on October 18, 2026.

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