A free app for Android, by Labeat Matoshi.

Click speed test is a simple android game with simple gameplay. The goal of the game is to click as much as possible in the specified time period. The faster your click, the higher your score. You can challenge your friends by sharing the application with them or manually record your score and see how you compare to other players in the room! Click Speed Test is a fun way to challenge your friends and family. You can use it to test your reaction speed or use it for having fun with friends playing a duel mode app. Moreover, it is an excellent tool for training reflexes and finger speed!