Ruddarr is a beautifully designed, open-source companion app for Radarr instances, available on the iPhone. With Ruddarr, users can conveniently manage their movies and documentaries from anywhere at any time. The app offers various features such as browsing upcoming releases in the Calendar, receiving fine-grained notifications, switching between multiple instances, customizing the app's color scheme and appearance, utilizing Custom Headers to connect to reverse proxies, and viewing Custom Formats and Scores.

One key requirement to note is that Ruddarr does not provide any media content itself; it requires a Radarr instance to interact with. Users looking to streamline their movie management experience will find Ruddarr a useful tool for enhancing their Radarr setup.