Only works with slow speeds. – Speedometer 55 GPS Speed & HUD Review

When cruising around town...sure it's accurate. Peg 198mph and it claims 118mph. I've tested it multiple times (on a track) and the highest speed it has shown is 124mph. I've had a laser verify my speed so It is the app not reading correctly. For my purposes it was a total waste of money.
Review by Slhe on Speedometer 55 GPS Speed & HUD.