CaliMob vs Calibre Companion — Full Reader + 8 Cloud Backends

Calibre Companion and CaliMob both connect to your Calibre library, but they solve different jobs. Calibre Companion (Android) can act as a Wireless Device, browse Content Server / OPDS, and use cloud folders (Dropbox, OneDrive, Google Drive, Box, and more) — but it has no built-in reader; it opens books in external apps. CaliMob is a full reader (EPUB, PDF, comics, audiobooks) on Android and iOS, with multiple backends including Google Drive, OneDrive, Dropbox, WebDAV, FTP/SFTP, OPDS, Content Server, and Calibre’s Wireless Device (Connect/Share) so you can send books from the desktop over your local network.

Feature Comparison

Who should use CaliMob?

CaliMob is for anyone who wants a complete Calibre-to-mobile solution in a single app: library + built-in reader for every format Calibre manages. There’s nothing else to install. If you read on the go, commute, or travel, CaliMob’s strength is multi-backend cloud plus an in-app reader — Google Drive, OneDrive, Dropbox, WebDAV, FTP/SFTP, OPDS, Content Server, or Wireless Device Connect/Share on the LAN — on Android and iOS. Optional Calibre plugin / CaliWeb backup can sync progress and metadata across devices when you enable it.

Who should use Calibre Companion?

Calibre Companion still makes sense if you already have a reader app you like (Moon+, ReadEra, …), prefer a lightweight library client that only hands off files, and are fine with Android-only. It can pull from Wireless Device, Content Server / OPDS, or cloud folders. Think of it as a library client that hands files to other apps — not as a reader itself.

Cloud sync vs local connection

Both apps can work away from home via cloud folders. Companion’s Wireless Device and Content Server paths need your phone and desktop Calibre on the same network; its Dropbox / OneDrive / Drive (and similar) modes do not. CaliMob’s pitch is the combination: multiple backends — including WebDAV and FTP/SFTP that Companion lacks — plus a full built-in reader so you are not juggling separate apps for ebooks, comics, and audiobooks.

CaliMob also offers an optional Calibre plugin / CaliWeb path for bidirectional progress and metadata across devices. On Wireless Device, Companion can sync metadata and Read status with desktop Calibre while connected; CaliMob receives books over Connect/Share into a local library on the phone, and uses Content Server, cloud folders, or OPDS for ongoing library access.

Built-in reader vs external apps

Calibre Companion is a library / transfer client, not a reader. It downloads books and hands them off to another app — you need Moon+ Reader, ReadEra, or similar for ebooks, a separate app for comics, and yet another for audiobooks. That’s 3–4 apps to manage.

CaliMob reads EPUB, PDF, MOBI, AZW3, CBZ/CBR comics (with manga mode and double-page view), and plays audiobooks natively. One app handles everything. Your reading position, highlights, and annotations are all in one place and can sync across devices via CaliWeb backup.

Looking for a Calibre Companion alternative?

In short

CaliMob replaces Companion and your separate reader app when you want cloud + local backends (including Wireless Device), a built-in reader for every format, and active development on Android and iOS. Calibre Companion remains a fit if you prefer an external-reader-only workflow and a one-time Android purchase. For most Calibre users who want one maintained app, CaliMob is the clearer choice.