CaliMob vs Calibre Companion — Full Reader + 7 Cloud Backends
Calibre Companion and CaliMob both connect to your Calibre library, but they work very differently. Calibre Companion transfers books over your local network via Content Server; CaliMob syncs from 7 cloud backends (Google Drive, Dropbox, WebDAV, FTP, SFTP, OPDS, Content Server) and includes a full built-in reader — no separate app needed.
Feature Comparison
| Feature | CaliMob | Calibre Companion |
|---|---|---|
| Calibre sync | ✓ 7 backends (cloud + local) | ✓ Content Server only (local network) |
| Built-in reader | ✓ EPUB, PDF, comics, audiobooks | ✗ Opens external reader |
| Platforms | Android, iOS | Android |
| Google Drive | ✓ | ✗ |
| Dropbox | ✓ | ✗ |
| WebDAV / Nextcloud | ✓ | ✗ |
| FTP / SFTP | ✓ | ✗ |
| OPDS catalogs | ✓ | ✗ |
| Calibre Content Server | ✓ | ✓ |
| Works away from home | ✓ Cloud sync | ✗ Requires same network |
| Comic reader (CBZ/CBR) | ✓ Manga mode, double-page | ✗ |
| Audiobook player | ✓ MP3, M4B, OGG, FLAC | ✗ |
| Calibre metadata sync | ✓ Full (series, tags, covers) | ✓ Basic |
| Bidirectional sync (plugin) | ✓ | ✗ |
| Offline reading | ✓ | Depends on external reader |
| Text-to-speech | ✓ | Depends on external reader |
| Highlights & annotations | ✓ Synced via CaliWeb | Depends on external reader |
| Multi-library | ✓ | ✓ |
| Price | Free (premium available) | €3.49 one-time |
| Last updated | 2026 (active development) | Infrequent updates |
Who should use CaliMob?
CaliMob is for anyone who wants a complete Calibre-to-mobile solution in a single app. You get your full library — metadata, covers, series, tags — synced from the cloud, with a built-in reader for every format Calibre manages. There’s nothing else to install. If you read on the go, commute, or travel, CaliMob works anywhere you have (or had) internet, because your books sync from Google Drive, Dropbox, WebDAV, or whichever backend you prefer.
Who should use Calibre Companion?
Calibre Companion makes sense if you only sync books at home over Wi-Fi and you already have a reader app you like. It transfers files from Calibre’s Content Server to your device — think of it as a wireless USB cable. You pick the books, it copies them, and you open them in another app. If that workflow suits you and you never need cloud sync, Calibre Companion does the job.
Cloud sync vs local only
The biggest practical difference: Calibre Companion requires your phone and your Calibre desktop to be on the same Wi-Fi network. If you’re at a café, on a train, or at the office, there’s no way to get new books. CaliMob syncs from your cloud folder, so any book you add to your Calibre library on your desktop appears on your phone automatically — even if you’re on the other side of the world.
CaliMob also offers a Calibre plugin for bidirectional sync: reading progress, metadata edits, and cover changes sync back to your desktop Calibre. Calibre Companion only transfers files in one direction.
Built-in reader vs external apps
Calibre Companion is a file manager, 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 sync across devices via CaliWeb backup.
Verdict
CaliMob replaces both Calibre Companion and your reader app. If you want cloud sync, a built-in reader for every format, and active development, CaliMob is the clear choice. Calibre Companion still works for a simple LAN-only transfer workflow — but for most Calibre users, CaliMob does more, for free.
Ready to try CaliMob? Get it free on Google Play · App Store, or explore the demo library with 30+ free books, comics, and audiobooks. Have questions? Read the FAQ or the setup guide.