Sound stinks – Reaction Tester Review

The visual cue is ok but the sound cue is obviously late. It says "tap" about a tenth of a second before the sound cue dings. The other reviewer saying it doesn't test his true reaction time because he expects it has no clue what he is talking about. The delay before the cue is randomized. What does he want - the app to go off at random times during his day? Perhaps while he is sleeping?
Review by RCPeterson on Reaction Tester.