Captain qBit

A modern Android app for managing a qBittorrent instance remotely over its Web API — control your self-hosted server from your phone. Written in Kotlin.

Features

Torrent list

- Live global and per-torrent download/upload speeds, progress, and ETA - Sort by name, size, progress, speed, ETA, ratio, date added, and more — tap again to reverse - Search torrents by name from a collapsible search bar - Filter by status, categories, tags, or trackers from a slide-in sidebar matching the qBittorrent desktop layout — active filters shown as dismissible chips - Categories containing / are grouped into a collapsible tree (like folders) - Each torrent shows its category and tags as chips, with a customisable colour per category - Select multiple torrents to bulk-set category or tags, pause/resume, or delete them in one action - Colour-coded status matching the qBittorrent Web UI (downloading, seeding, stopped, errored…)

Adding torrents

- Add via magnet links or .torrent files, or open them from other apps - Choose a category (pick an existing one or create a new one on the spot), set a save path, start paused, or enable Automatic Torrent Management - Choose which files to download before adding — the file tree is read instantly from a .torrent, or fetched over the network for a magnet - Detects duplicates before adding, so you don't re-add a torrent you already have

Managing torrents

- Pause/resume, delete (optionally with data), force recheck, reannounce, and rename - Set or create categories, manage tags, toggle Automatic Torrent Management, or change the save path - Detail view with Info, Files, Trackers, and Peers tabs — browse the file tree, copy full paths, and set per-file download priorities (or skip files entirely) - Surfaces the actual failure reason when a torrent errors, instead of a bare "error"

Connection & reliability

- Works with qBittorrent 4.x and 5.x - Optional HTTP Basic Auth for servers behind a reverse proxy - Short, readable messages for network errors - Optional status notification showing connection state and current speeds

Servers & settings

- Save multiple servers and switch the active one from the navigation drawer - Manage servers — add, edit, or remove them — from an in-app Settings screen - Light, Dark, or System theme, plus optional Material You dynamic colours - Notifications you control: toggle the ongoing status notification, and opt in to alerts when a download or a force-recheck finishes - Encrypted backup — export and import all your servers and settings as a passphrase-protected file - About screen with app version and project links

Self-signed HTTPS: certificates are validated properly (no blanket "trust everything" option). To use a self-signed cert, install it on your device via Settings → Security → Install a certificate — the app then trusts it with full validation. Plain HTTP on a LAN and normally-signed HTTPS work without any setup.

License

Original work © Yash Garg and contributors

Modifications © 2026 Aviad Gafni

GNU General Public License v3.0