**********************************************
********* This is a reaction test ************
********* try be as fast as possible *********
********* THE BEST SCORE IS SAVED ************
********* you can restart your score *********
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very sample app that does its job.!
Last updated on 2015年07月30日
v2.0 bug fixing + better performance
added option to block cheating
v1.8 fixing crashes + better performance
v1.9 fixing screen timeout + crashes
