Comparison

ULAD vs Thorium Reader

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

Head to head

Un libro al día

Read it your way

★ 3.412 ratingsView app →

About

ULAD

Features

Read full description

Un Libro al Día (ULAD) – La App Cada día, una nueva reseña. Con la aplicación de Un libro al día descubrirás lecturas de todo tipo: narrativa contemporánea, clásicos, poesía, ensayo, cómic, literatura infantil, entrevistas con escritores y mucho más. Funciones principales: Libro del día: una reseña nueva cada día. Favoritos y leídos: guarda y organiza los libros que más te interesan. Colecciones: explora por géneros y temas (novela, cuento, terror, humor, ensayo, etc.). Comunidad: comparte opiniones, comenta reseñas y recomienda lecturas. Recomendados: descubre libros seleccionados para ti y por la comunidad. Metaentradas: reflexiones y contenidos especiales sobre literatura. Traducción integrada: lee las reseñas y comentarios sin importar el idioma que hables; traduce con un toque. Un espacio hecho por lectores y para lectores. Únete a la comunidad de Un libro al día y encuentra tu próxima lectura, cada día. One Book a Day (ULAD) – The App A new review, every single day. With the Un libro al día app, you’ll discover a wide range of books: contemporary fiction, classics, poetry, essays, comics, children’s literature, and interviews with authors, among much more. Key features: Book of the Day: a brand-new review every day. Favorites & Read: save and organize the books you love. Collections: explore by genres and themes (novel, short story, horror, humor, essay, etc.). Community: share your thoughts, comment on reviews, and recommend books. Recommendations: discover books picked for you and by the community. Meta Posts: special reflections and literary extras. Built-in translation: read reviews and comments no matter what language you speak—translate with a tap. A space made by readers, for readers. Join the Un libro al día community and find your next read—every day.

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

ULAD4 screens

Thorium Reader4 screens

Verdict

The call

The clearest difference is update cadence: ULAD at every 3 days against Thorium Reader's every 3 weeks. ULAD also leads on iOS requirement (13.0 vs 26.1). On price, ads, in-app purchases and device support 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.

UpkeepUpdate frequency

ULAD ships an update every 3 days, Thorium Reader every 3 weeks. The most recent releases landed on October 1, 2026 and October 18, 2026 respectively.

Scorecard2 real differences · 8 level

ULAD versus Thorium Reader: the parameters behind the verdict, then further details
Parameter	ULAD	Thorium Reader
Price	Free	Free
Rating	—	3.4 (12 ratings) — better
Positive reviews	—	40.0% of reviews
Number of ratings	—	12 — better
Update frequency	Every 3 days — better	Every 3 weeks
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPad, iPod — better	iPhone, iPad
Requires iOS	13.0 — better	26.1
Further details — not scored
Size	31 MB	46 MB
Age rating	12+	17+
Developer	Alain Rios	Readium

In-app purchases

None

ULAD

No in-app purchases

None

Thorium Reader

No in-app purchases

Questions

Is ULAD free?

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

Is Thorium Reader free?

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

Do ULAD or Thorium Reader have ads?

Neither ULAD nor Thorium Reader shows ads.

Which is updated more often, ULAD or Thorium Reader?

ULAD ships an update every 3 days, and Thorium Reader every 3 weeks. Most recently, ULAD was updated on October 1, 2026 and Thorium Reader on October 18, 2026.