Comparison

Calibre ebook reader vs Babel Reader

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

Head to head
About

Calibre ebook reader

Seamlessly sync your Calibre ebook library wirelessly to your iPhone. Convert various ebook formats to EPUB directly within the app and customize your reading experience with adjustable fonts, themes, and spacing. Listen to your books with text-to-speech functionality.

Highlights
  • Wireless Calibre library sync
  • Built-in ebook converter (PDF, MOBI, AZW, etc. to EPUB)
  • Customizable reading experience (fonts, themes)
  • Text-to-speech audiobook functionality
  • Import from cloud storage (Files, Dropbox, iCloud)
  • Organize library by author, series, collection
Features
Read full description

Pageo is a Calibre companion app for iPhone and iPad: a Calibre ebook reader that syncs your library over Wi-Fi in both directions, converts any ebook to EPUB and reads your books aloud in 31 languages. It connects directly to the Content Server built into Calibre — no cables, no account, no hassle. ▶ TWO-WAY CALIBRE SYNC Turn on the Content Server in Calibre (Mac, Windows or Linux) and Pageo finds it on your local network, or connect by address. Books come to your iPhone or iPad — and your reading position, finished books, ratings and highlights go back to your computer, into Calibre's own annotations. Download one book or the whole library in a tap. ▶ ALL YOUR CALIBRE LIBRARIES — EVEN WITH YOUR COMPUTER OFF Multiple Calibre libraries: browse one at a time or all at once, with separate progress for every book. Or open a Calibre library folder straight from iCloud, Dropbox or this device — no server needed. ▶ PICK UP WHERE YOU LEFT OFF With Pageo Pro, your place, bookmarks and highlights follow you between iPhone and iPad through iCloud — with or without Calibre. Just add the same book on each device. ▶ BUILT FOR CALIBRE POWER USERS Table view puts the columns you built in Calibre into a desktop-style layout — sort by any column, pin titles, jump with the A–Z rail. Search your whole library with Calibre's own search syntax, or search inside every book, even ones you haven't downloaded yet. Series, tags and the author sort you set in Calibre carry over. ▶ CONVERT ANY EBOOK PDF, MOBI, AZW, AZW3, FB2 and CBZ/CBR comics become clean EPUBs right on your device — no desktop, no extra apps. A PDF's footnotes move to the end of the chapter, a tap away from their number. Anything Pageo can't convert itself, it hands to your Calibre server. Share a web page from Safari and it becomes a clean EPUB on your shelf. ▶ READ YOUR WAY Any iOS typeface or reading aids like OpenDyslexic, Atkinson Hyperlegible and Lexend. Focus Text, word spacing and hyphenation in your book's own language. Text up to 400%, six line-spacing and six margin settings. Light, dark and sepia themes, page or scroll mode, page curl or instant turns, right-to-left languages. Tap a picture to see it full screen and zoom in. Highlights, notes and bookmarks — export your annotations to a single file. Pageo remembers your place in every book. ▶ LISTEN TO YOUR BOOKS Turn any ebook into an audiobook with built-in read-aloud: ten lifelike voices, 31 languages, fully offline after a single download. The page follows the voice, and every language gets a natural pace. ▶ FIND ANYTHING FAST Search inside the book you're reading or across your whole library. Your books, chapters, highlights and bookmarks show up in Spotlight, and Siri Shortcuts let you say "Continue reading in Pageo" or "Listen to my book in Pageo". Home Screen widgets keep your current book and reading streak in view. ▶ YOUR LIBRARY, YOUR CONTROL Import from Files, Dropbox, OneDrive or iCloud Drive. Organize by author, series, tags or collection. Nothing to read yet? The Discover tab offers free public-domain classics from Project Gutenberg in many languages. Your books stay on your device — no account, no lock-in. ▶ FREE WITH OPTIONAL PRO UPGRADE Pageo is free to use with ads. Pageo Pro unlocks read-aloud, the converters and iCloud sync, and removes ads. Try Pro free for 3 days. ▶ COMMON QUESTIONS Does Pageo work with Calibre? Yes — with the Content Server built into Calibre on Mac, Windows and Linux. No plugin or connector to install. Does my reading sync between iPhone and iPad? Yes — through iCloud with Pageo Pro, or through Calibre. Does my computer need to be on? For server sync, yes. For a library folder in iCloud or Dropbox, no. Does reading progress sync back to Calibre? Yes — position, finished status, ratings and highlights. Do I need an account? No. Terms of Use (EULA): https://visioncraft.es/pageo-terms Privacy Policy: https://visioncraft.es/pageo-privacy-policy

About

Babel Reader

Read EPUB books with a customizable, distraction-free experience. Translate any paragraph instantly on-device, supporting over 20 languages. Organize your library and sync across Apple devices.

Highlights
  • Distraction-free reading experience
  • On-device translation for 20+ languages
  • Customizable typography and themes
  • EPUB 2 & 3 support
  • Library organization and iCloud sync
  • Read Aloud and Share functionality
Features
Read full description

Babel Reader is a clean, distraction-free EPUB reader for iPhone and iPad. Import your books, read with beautifully crafted typography, and translate any paragraph with a single tap — all without sending a single byte to any server. READING EXPERIENCE • One menu for everything while you read: contents, search, translation, appearance, and bookmarks • Two ways to read: page-by-page layout with smooth swipe navigation, or continuous scrolling • Page numbers for the whole book, as in a printed edition — worked out for your device, font, and text size, and the same in page and scroll mode • Distraction-free by default: just the text and a discreet progress indicator — page number, percentage, or page dots, as you prefer. A tap brings back the controls and the clock • Portrait and landscape support (two-column pages in landscape) • Ready for iPhone Duo: adapts to the new foldable and makes full use of its large inner display • Four reading themes: White, Sepia, Night, and Slate • Five typefaces: Georgia, Palatino, Baskerville, Iowan Old Style, and System • Adjustable text size and line spacing • Each book remembers its own display settings — font, size, line spacing, and theme • Optional hyphenation and text alignment (flush left, justified, flush right, centred) • Full-screen image viewer: tap any illustration and pinch to zoom FIND YOUR WAY • Contents with chapters and their sections — even in books that put everything into a single file • Links inside the book, such as footnotes and cross-references, take you straight to where they point • Search within the current chapter or across the entire book, in page and scroll mode — the arrows carry on into the next or previous chapter • Bookmarks: save any passage, rename it in your own words, and jump straight back to it — synced across your devices via iCloud TRANSLATION • Tap any paragraph to translate it in place • Tap again to restore the original • Translation runs entirely on your device — no text leaves your iPhone or iPad • Supports 20+ languages including Arabic (with full RTL support), Chinese (Simplified & Traditional), Dutch, English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Thai, Turkish, Ukrainian, and Vietnamese • Optional Read Aloud & Share: have the original or the translation read aloud, or share either via any app on your device YOUR LIBRARY • Import EPUB files from Files, Mail, Safari, and any other app that supports Share Sheet • Organise your books into Collections • Grid or list view • Sort by date added, title, author, language, or most recently read • Edit book title, author, and language metadata • Export your entire library to a folder and import it again — as a backup or to move to a new device • iCloud sync: keep your entire library and reading progress in sync across all your Apple devices (optional, uses your private iCloud account) AVAILABLE IN 7 LANGUAGES The app interface is fully localised in English, German, French, Dutch, Spanish, Italian, and Polish. PRIVACY FIRST Babel Reader collects no personal data. It contains no advertising, no analytics, and no third-party tracking of any kind. On-device translation never sends your text to a server. iCloud sync uses only your own private iCloud account — your data is never accessible to the developer. EPUB FORMAT Babel Reader supports EPUB 2 and EPUB 3 files. PDF, MOBI, and AZW3 are not supported in this version.

Screenshots

Calibre ebook reader4 screens
Babel Reader4 screens

Verdict

The call

The clearest difference is price: Calibre ebook reader at Free against Babel Reader's $4.99. Calibre ebook reader also leads on update cadence (every 9 days vs every 3 weeks). Babel Reader's advantage is in-app purchases (none vs 4) and ads (none vs shown). On device support and iOS requirement 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

Calibre ebook reader is free to download; Babel Reader costs $4.99 up front. Calibre ebook reader sells 4 in-app purchases, starting at $4.99 per month. Babel Reader asks for nothing beyond the download.

UpkeepUpdate frequency

Calibre ebook reader ships an update every 9 days, Babel Reader every 3 weeks. Both last shipped on October 31, 2026.

Scorecard6 real differences · 4 level
Calibre ebook reader versus Babel Reader: the parameters behind the verdict, then further details
ParameterCalibre ebook readerBabel Reader
PriceFree — better$4.99
Rating4.8 (14 ratings) — better—
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings14 — better—
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.0 — better18.6
Further details — not scored
Size88 MB3 MB
Age rating4+4+
DeveloperVISIONCRAFT, SOCIEDAD LIMITADAMartin Bocker Dr

Customer experience

Calibre ebook reader

All ratings13 ratings
Positive92.3%
Neutral7.7%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Babel Reader

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Calibre ebook reader

Subscriptions3
  • Pageo Pro3 Days trial$4.991 Month
  • Pageo Pro$4.991 Month
  • Pageo Pro3 Days trial$19.991 Year
One-time1
  • 1 Day of Pro$0.99
None

Babel Reader

No in-app purchases

Questions

Is Calibre ebook reader free?
Calibre ebook reader is free to download, with in-app purchases available.
Is Babel Reader free?
Babel Reader costs $4.99, with no in-app purchases.
Do Calibre ebook reader or Babel Reader have ads?
Calibre ebook reader shows ads; Babel Reader does not.
Which is updated more often, Calibre ebook reader or Babel Reader?
Calibre ebook reader ships an update every 9 days, and Babel Reader every 3 weeks. Most recently, Calibre ebook reader was updated on October 31, 2026 and Babel Reader on October 31, 2026.

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