GeoJoystick is an open-source Android mock-location joystick for emulator and developer testing. It uses Android's standard mock-location provider flow and provides a small floating overlay for moving a mock location without repeatedly switching back to the main app. It does not try to hide or bypass Android mock-location status. Features include manual coordinate entry, an OpenStreetMap-based picker, map-link coordinate import, compact and expanded overlay modes, favorite locations, speed presets, custom speed, light and dark themes, and English/German language support. GeoJoystick has no ads, accounts, subscriptions, analytics, billing, or built-in updater.