kamui2040/k2040-geojoystick

GeoJoystick is an open source Android app that lets you fake your phone GPS location for testing purposes, controlled through a small floating joystick you can drag on screen. It works through Android official mock location system, so it never tries to hide the fact that a fake location is active, and it only publishes a fake position while its foreground service is running with a visible notification. You set a location by typing in latitude, longitude, and altitude, using a built in OpenStreetMap map picker that needs no external JavaScript or API key, or by importing coordinates from a copied map link. Once a position is set, a floating joystick overlay lets you move around at different speeds, with presets for walking, running, and biking, plus your own custom speed. You can hold, pause, hide, or stop the movement, switch the overlay between an expanded and a compact layout, and the app remembers your last overlay mode and speed preset the next time you open it. Other settings include light, dark, or system appearance, English or German language, adjustable overlay opacity, a high contrast mode, up to five named favorite locations, and an option to restore your last active position automatically. The app has no ads, subscriptions, accounts, analytics, billing, or built in updater. It is free to use, and the developer, known as K2040, accepts optional support through Ko-fi with no paid features tied to it. It is available as a GitHub release or through APKPure, with GitHub Releases treated as the main source for release notes. To build the project yourself on Windows, you run an included build script instead of a committed Gradle wrapper. The script finds Android Studio JDK and SDK, downloads and verifies Gradle itself, and produces a debug APK. To use the app you install it, grant permission to display over other apps, choose it as the mock location app in Android developer options, then pick a location and start the overlay. GeoJoystick is licensed under GPL-3.0.