Calibre Companion

Samuel Cohen

Contains adsIn-app purchases

About this app

Keep your calibre library organized on your Android phone or tablet. Browse book covers and details, find your next read, and open books in your preferred reader app.

YOUR LIBRARY, ORGANIZED
• View authors, series, tags, ratings, and other book details.
• Sort, search, and group your collection.
• Switch between cover and list views, with light and night display options.
• Mark books as read and sync reading status with desktop calibre.

CONNECT TO DESKTOP CALIBRE
Connect as a wireless device over Wi-Fi, then use calibre on your computer to send books and update their metadata. You can also browse your calibre Content Server and download books directly to your device.

ACCESS YOUR CLOUD LIBRARY
Browse a complete calibre library stored in Dropbox or Box and download books for use on your device. Cloud libraries must include the metadata.db file and their book folders. A folder containing only ebook files is not a complete calibre library.

OPTIONAL AI PLUS
Ask questions about a book, choose chapters to use as context, and review AI suggestions for its metadata. AI Plus requires Google sign-in, an internet connection and a separate subscription with usage credits. Credit costs are shown before a request. Selected book text and questions are sent to our AI service for processing. AI responses may be inaccurate; review suggestions before applying them. AI Plus and ad removal are separate purchases.

FREE LIBRARY FEATURES, OPTIONAL AD REMOVAL
Library organization and supported connections are available without an ad-removal purchase. The free experience includes banner ads in the library. Choose an optional monthly or annual ad-free subscription, or a one-time purchase for permanent ad removal. Current prices are shown in the app and confirmed by Google Play before purchase.

Subscriptions renew automatically unless canceled through Google Play. Canceling stops the next renewal; ad-free access continues until the paid period ends. You can restore eligible ad-removal purchases using the same Google Play account. Previous purchases of the paid app do not automatically enroll you in a subscription or result in new charges. Ad removal is a separate optional purchase.

BEFORE YOU START
Calibre Companion is a library manager, not an ebook reader or file converter. Install a compatible reader app to open your books; supported formats depend on that reader. Books and a desktop calibre library are not included.

Wireless device and Content Server connections require the corresponding service to be enabled in desktop calibre and a network connection between your devices. Cloud access requires your own account and a complete calibre library uploaded to that provider.

Support: [e-mail]
Privacy: https://cc-ai-relay-yqzllwyq4a-uc.a.run.app/privacy
Terms: https://calibre-companion-website.replit.app/terms

Ratings and reviews

While trying to connect to my local content server, I received an error message stating my (device) library is read-only, and to "see faq"--an external link to a website that no longer exists. Regardless, the likely reason for the error is the way file access permissions are handled differently in newer versions of Android--meaning, if you receive this error, there isn't much you can do, besides petition the custodian of this app to make the requisite changes to get it minimally functional again

Latest update to version 5.4.4.21 broke the link to Moon+ Reader, and I can no longer open books from Calibre Companion. Tried reinstalling both Moon+ and CC to no avail. Aside from that, I've been using Calibre Companion for years and have never had a problem, even during the many years that the app languished with no development. I'm glad to see that there is work being done on the app once more and hope that a fix will be pushed out for the recent issue.

I have used and loved Calibre Companion for years; it is the best way of getting books from calibre on my computer onto my phone for reading. The latest update has made things much more difficult, though; while I can still get and mark books I cannot open a book in any reading app (I've tried my usual FBReader, Moon+, Aldiko...). It will happily attempt to open a book in Songbook - at least, that's the app that pops up when I hit Read. The book doesn't actually open.

What’s new

- Updated App to handle dark mode
- Minor UI improvements
- Added support for latest mobiles and tablets