Speed Climbing Stopwatch Reaction Trainer

 Speed Climbing Stopwatch Reaction Trainer is an app to train your reaction time to the IFSC speed climbing start signal.

You can get it on the google play store:
https://play.google.com/store/apps/details?id=com.itsblue.SpeedClimbingReactionTrainer

This app is open-source!
https://git.itsblue.de/dorian/speed-climbing-reaction-timer.git