Turn your phone into a simple power meter. Enter two weights, press Start, and watch kilowatts, horsepower and distance light up on a big red LED display.
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Your weight and your car's weight, in kg or pounds. The app remembers them for next time.
On a level, straight road, the 10 second timer begins and the big dyno display fills your screen.
Peak kilowatts, peak horsepower and distance in metres are shown when the timer ends. Press Reset to go again.
Results are estimates of wheel power, worked out from GPS speed and the weights you enter. This is not a certified dyno, and results depend on GPS signal, weight accuracy, road slope and wheelspin. Only use it on a closed road, track or private area, and never operate it while driving.