Radarr is a movie collection manager for Usenet and BitTorrent users. It can monitor multiple RSS feeds for new movies and will interface with clients and indexers to grab, sort, and rename them. It can also be configured to automatically upgrade the quality of existing files in the library when a better quality format becomes available. Note that only one type of a given movie is supported. If you want both an 4k version and 1080p version of a given movie you will need multiple instances.
Radarr on umbrelOS will automatically connect to download clients installed from the Umbrel App Store. Choose from Transmission, qBittorerent, and SABnzbd. Simply install your preferred client(s).
All you need to do from there is add an indexer so Radarr can search for movies. You can add indexers directly within Radarr, or install Prowlarr from the Umbrel App Store for easier management of indexers across multiple apps.
Add your indexers to Prowlarr and they will be automatically available in Radarr.