SlotCount is a lap counter for analog slotcar tracks
SlotCount is a lap counter for analog slotcar tracks (e.g. Carrera(tm), Ninco(tm), Scaletrix(tm)). The movements of the cars are detected by the smartphone camera, the laps and lap times are detected and displayed.
It took some time for me to do the Pro version. Now it's there and there will be some new features soon. This is why the app is now 1.99 €, later it will be 3.99.