GPS Speedo with HUD is the best app to monitor your current, average, top speed and heading! GPS Speedo is very easy to use, just set your desired unit of measurement and you are ready to go. Your average and top speed is automatically calculated and has a reset function, just press and hold the value you want to reset. Enable the Heads-up Display mode and place your device under the windshield to see your speed in the windshield. The actual speed is zoomable and you can change the color by