nzb360: Android Manager for Usenet, Torrents, and the *arr Stack
nzb360 is the established Android application for managing a self-hosted media automation stack from a phone. It connects to services you already run rather than hosting anything itself.
What it connects to
nzb360 aggregates an unusually wide set of services in one app: SABnzbd and NZBGet for Usenet, qBittorrent, Deluge, and Transmission for torrents, plus Sonarr, Radarr, Lidarr, Readarr, Prowlarr, and indexer management. For anyone running the full stack, that consolidation is the entire appeal: one app instead of six browser tabs.
What you actually do with it
The common workflows are searching indexers and sending a release to a download client, watching queue progress with speed and ETA, adjusting priorities, and clearing failed grabs. It also surfaces the calendar so you can see what is due.
Access and security
Like every client of this type, nzb360 needs URLs and API keys, and the underlying services should not be exposed directly to the internet. A VPN back to your network is the standard approach.
nzb360 has been maintained for many years, which in a category full of abandoned hobby clients is worth noting. It uses a free tier with a paid unlock for the full feature set.