App for timing 1/4 mile runs and 0-60mph sprints. Upload your best timings and compare with results from other drivers.
Speedometer operates off phone GPS service. Accuracy is dependant on your phone and satellite reception.
To do a timing run, touch on of the buttons on the first screen.
The timing lights will appear, one touch will begin and sow pre-stage lights. Stage lights will show when the car is stationary and GPS has aquired a reasonable accuracy.
1 second later the first orange light will light up. Orange lights will light up consecutively 0.5 second intervals followed by green to go!
Launch is based on detecting acceleration force through the face of the phone, therefore the phone must be in an upright and stable position to work correctly.
Have fun! Be safe! Upload your data and compare with others.
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