Speed Lite : SpeedyMarks

This application turns your device into a speedometer and accelerometer. By assigning background colors to speed ranges you can see from the corner of the eye how fast you e.g. to avoid speeding.

Features:

- The acceleration is color coded with a red background as well

- Tap the small speed to toggle between mph and km/h

- Tap the accelerator to make it larger

Ad supported freeware