Apps like Harry's LapTimer Rookie

Here are some great alternatives to Harry's LapTimer Rookie by Harald Schlangmann :
GPS Laps
GPS Laps
★3.7
RaceChrono Pro
RaceChrono Pro
★4.6
Vracer GPS Track Day Lap Timer
Vracer GPS Track Day Lap Timer
★3.7
LapTrophy - Track Lap Timer
LapTrophy - Track Lap Timer
★4.4
RaceChrono
RaceChrono
★4.3
Speedometer: GPS Speedometer
Speedometer: GPS Speedometer
★4.5
Racing View
Racing View
★4.9
MyRaceLab: Lap & Race Timer
MyRaceLab: Lap & Race Timer
★4.1
SmartRace for Carrera Digital
SmartRace for Carrera Digital
★4.7
M Performance Drive Analyser
M Performance Drive Analyser
★4.1
Sonar Go: Connected Vehicle
Sonar Go: Connected Vehicle
★5.0
Slot Car Trainer Pro
Slot Car Trainer Pro
★4.4
Slot Car Trainer Lite
Slot Car Trainer Lite
★3.8
TrackAddict
TrackAddict
★4.6
Track Recorder(Torque OBD/Car)
Track Recorder(Torque OBD/Car)
★3.3
Speedometer Dash Cam Car Video
Speedometer Dash Cam Car Video
★3.6