Apps like Harry's LapTimer GrandPrix

Here are some great alternatives to Harry's LapTimer GrandPrix by Harald Schlangmann :
RaceChrono Pro
RaceChrono Pro
★4.6
LapTrophy - Racing Lap Timer
LapTrophy - Racing Lap Timer
★4.4
RaceChrono
RaceChrono
★4.4
Hotlap – GPS Lap Timer
Hotlap – GPS Lap Timer
★4.5
MyRaceLab: Lap & Race Timer
MyRaceLab: Lap & Race Timer
★4.8
Speedometer Dash Cam Car Video
Speedometer Dash Cam Car Video
★3.3
M Performance Drive Analyser
M Performance Drive Analyser
★4.2
SmartRace for Carrera Digital
SmartRace for Carrera Digital
★4.7
Vracer: GPS Lap & Race Timer
Vracer: GPS Lap & Race Timer
★3.5
GPS Speedometer Tracker
GPS Speedometer Tracker
★4.2
Slot Car Trainer Pro
Slot Car Trainer Pro
★4.6
Slot Car Trainer Lite
Slot Car Trainer Lite
★3.6
TrackAddict
TrackAddict
★4.8
Track Recorder(Torque OBD/Car)
Track Recorder(Torque OBD/Car)
★3.3
LapSnap - AiМ, GoPro telemetry
LapSnap - AiМ, GoPro telemetry
★3.5
DashCam Video & Image Recorder
DashCam Video & Image Recorder
★5.0