Accelerando: Play with motion

Accelerando is a revolutionary music player that automatically adjusts playback speed based on your movement. Perfect for running and other activities. Features: - Real-time music speed adjustment based on GPS - Supported audio files: .m4a, .mp3, .flac, .wav, .aiff, .aif, .aifc, .caf, .aac, .mp4, .m4p, .m4b, .3gp, .3g2, .amr, .ac3, .eac3, .mp1, .mp2, .au, .snd - Background playback with lock screen controls - Simple playlist organization - 3 customizable presets (music tempo & movement speed) - Speed unit selection The run, bicycle, and car presets work exactly the same - you can use them for any type of activity. Whether you're warming up or sprinting, Accelerando keeps your music in sync with your pace! Do not use this app while driving a vehicle. This application is designed to be used only as a passenger. Safety is important.