Press Kit

For writers, reviewers and video makers.

Calibre Reader is a reader app for iPhone and iPad made for the book libraries people keep themselves: calibre's content server, calibre-web, Kavita, Komga, OPDS catalogues, a NAS or cloud folder, or the device itself. It reads EPUB, PDF, Kindle files, comics, DjVu and audiobooks, reads aloud in natural voices, follows an audiobook word by word, opens two books side by side, and sets Japanese and Chinese vertical text as a printed book does. Free on the App Store, in 40 languages.

The full version for reviewers

Writing about Calibre Reader, or making a video? Write to contact@calibrereader.com with where it will appear, and we'll send an App Store code for Supporter — Lifetime: the full version, every limit lifted and no ad, on your own Apple Account. Answers to questions, and early looks at what's coming, the same way.

Fact sheet

Name	Calibre Reader
Made by	An independent developer. Not affiliated with, endorsed or sponsored by calibre or calibre-web, which are separate open-source projects; Calibre Reader reads the libraries they make.
Platforms	iPhone, iPad and iPhone Duo (iOS and iPadOS 16 or later). The Mac comes next, then Android, Windows and Linux.
Released	13 November 2026
Price	Free, with one ad on Home. Supporter — Lifetime (US$8.99, once) lifts the free limits and removes the ad; tips are optional. See Supporting Calibre Reader.
Languages	40
App Store	apps.apple.com/app/id6821815508
Website	calibrereader.com
Contact	contact@calibrereader.com

Highlights

Every place books live: calibre's content server and calibre-web, Kavita, Komga, OPDS, WebDAV, FTP, Dropbox, Google Drive, OneDrive and Box, and a library on the device. Nothing goes through a server of ours.
Every format calibre keeps: EPUB, PDF, MOBI and AZW3, comics (CBZ, CBR), DjVu, CHM, plain text, audiobooks and films, and conversion between them.
A page shaped by the reader: themes with pictures and sounds of their own, any font (including the reader's own), margins to the point, page turns that slide, fade, fold or curl like paper.
Vertical Japanese and Chinese: set as a printed book is, two pages side by side on an iPad held sideways, turned at the spine.
Listening: Read Aloud in natural voices made on the device, and Read Along with an audiobook, the words lit as they are spoken. CarPlay too.
Two books side by side: a book beside its translation, sentence beside sentence, scrolling together.
Writing: notes and highlights in colour, Apple Pencil markup on PDFs, notebooks and manuscripts of one's own.
Reading with others: book clubs that read together chapter by chapter, and lending a book to a friend, phone to phone.
For everyone: VoiceOver throughout, and its own voices for reading aloud.