Excellent

It pays for itself if it saves me one stinking speeding ticket! My aged Beemer tends to have intermittent instrument failure. This app is saving me big $. 1) no instrument cluster repair. 2) no speeding tickets when alone at night on the highway. 3) constant odometer, no running out of gas when the fuel gauge malfunctions. 4) maps are useless without a compass. No long drives the wrong direction when in unfamiliar territory. For a couple of lousy bucks get the "full version". The extra goodies are worth it just for the convenience.

Rolex Lamborgini about Speedometer Speed Box, v5.1