Comparison

Libra reader vs Calimob

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

Head to head
About

Libra reader

Features
Read full description

Libra is a modern ebook reader and library manager for iPhone and iPad. Read the books you already own — from your device, your cloud storage, or any OPDS catalog — and keep your reading progress, highlights and notes in sync across all your devices. Key features • All major ebook formats • Read from device, cloud storage and OPDS catalogs • Comfortable, fully customizable reading • Highlights, notes and bookmarks • On-device translation • Reading sync across your devices Ebook formats • EPUB • PDF • FictionBook (fb2, fb2.zip) • MobiPocket and Kindle (mobi, azw3) • Comic Book (cbz) • Word (docx) • Markdown, HTML and plain text (md, html, txt) Your books, your storage • Locally on the device • In cloud storage: iCloud Drive, Google Drive, OneDrive, Dropbox, Yandex Disk • From OPDS catalogs and online libraries you choose • Add your own catalog, for example a Calibre content server over OPDS Comfortable reading • Light, Sepia and Dark themes • Paginated (swipe) or continuous scroll • Serif, sans-serif and monospace fonts • Adjustable font size, line height, paragraph spacing, margins, letter spacing and text alignment • Device-independent reading position that transfers correctly across screens and devices • Table of contents navigation Highlights, notes and bookmarks • Highlight passages in four colors • Attach notes to your highlights • Bookmark any page • Share and export your notes and highlights as text Library management • Organize books into custom collections • Browse by folders across all your sources • Search your library • Automatic cover and metadata extraction • Track reading status and progress, and mark books finished • Rate and review your books • Back up and restore your library Translation • Translate selected text right in the reader • Translation runs on your device — nothing leaves it Sync across your devices (Pro) • Sync your library, reading position, progress, highlights, notes, bookmarks, reviews and collections • Syncs privately through your own iCloud account — we run no server and never hold your data ——— Support: support@libra-reader.com Privacy Policy: https://libra-reader.com/privacy Terms of Service: https://libra-reader.com/terms

About

Calimob

Features
Read full description

Your entire Calibre library, in your pocket. CaliMob syncs your Calibre ebook library to your phone or tablet — with full support for EPUB, PDF, CBR/CBZ/CB7, MOBI, AZW3 and audiobooks. Read, annotate, and pick up exactly where you left off. FORMATS & READERS • EPUB reader with custom fonts, themes, margins and text-to-speech (TTS) • Comic and manga reader with full-screen mode (CBR, CBZ, CB7) • PDF viewer with reflow support • MOBI and AZW3 reader — no conversion needed • Audiobook player (MP3, M4B, AAC, OGG, FLAC) SYNC YOUR LIBRARY • Bidirectional sync with your Calibre server via CaliWeb plugin • Google Drive, Dropbox, OneDrive — use your existing cloud storage • WebDAV, FTP and SFTP for self-hosted setups • OPDS catalog browsing (Calibre-Web, Kavita, Komga and more) • Reading progress, annotations and highlights sync across devices FIND ANY BOOK INSTANTLY • Filter by author, series, tag, publisher or format • AI-powered semantic search across your entire collection • Multiple libraries with independent settings DESIGNED FOR READING • Dark mode with true black OLED theme • Reading progress tracking with statistics • Highlights, bookmarks and notes • Offline reading — download books for reading anywhere • Customizable reading experience (fonts, spacing, colors) • Import books from any app via share intent PRIVATE & SECURE • Your books stay on your device and your cloud — no third-party servers • No ads, no tracking • Open-source Calibre plugin CaliMob is built for Calibre users who want their library everywhere. Whether you read novels, comics, manga, technical PDFs or listen to audiobooks — CaliMob handles it all. Questions or feedback? Visit caliwebapp.com/help

Screenshots

Libra reader4 screens
Calimob4 screens

Verdict

The call

The clearest difference is in-app purchases: Calimob at none against Libra reader's 2. Calimob also leads on update cadence (every 3 days vs every 3 weeks) and iOS requirement (15.6 vs 18.2). On price, ads and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Libra reader sells 2 in-app purchases, starting at $1.99 per month. Calimob asks for nothing beyond the download.

UpkeepUpdate frequency

Libra reader ships an update every 3 weeks, Calimob every 3 days. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Libra reader versus Calimob: the parameters behind the verdict, then further details
ParameterLibra readerCalimob
PriceFreeFree
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.215.6 — better
Further details — not scored
Size68 MB93 MB
Age rating4+4+
DeveloperSergei MikhailovFrada SRL

In-app purchases

2 purchases

Libra reader

Subscriptions2
  • Libra Pro – Monthly$1.991 Month
  • Libra Pro – Yearly$19.991 Year
None

Calimob

No in-app purchases

Questions

Is Libra reader free?
Libra reader is free to download, with in-app purchases available.
Is Calimob free?
Calimob is free to download, with no in-app purchases.
Do Libra reader or Calimob have ads?
Neither Libra reader nor Calimob shows ads.
Which is updated more often, Libra reader or Calimob?
Libra reader ships an update every 3 weeks, and Calimob every 3 days. Most recently, Libra reader was updated on September 21, 2026 and Calimob on September 23, 2026.

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