OwnTracks Recorder is an open-source, self-hosted backend server designed to securely collect, store, and visualize location data shared by OwnTracks mobile applications. It acts as a central hub that receives MQTT messages containing location updates from OwnTracks clients, allowing users to maintain full control over their geospatial information without relying on third-party services. The Recorder supports features such as geofencing, event notifications, and historical location data storage, all accessible through a user-friendly web interface tailored for privacy-conscious individuals seeking an efficient personal location tracking solution.