Synchronization issues?

Love the concept, but it needs a couple tweaks.

-There seems to be a delay with the response of the users taps that causes "flams" for in-tempo taps vs. the metronome beat. Not great for teaching good habits to young musicians. It feels almost impossible to line them up audibly, and it is only achievable by migrating slightly off the beat.
-It would be nice to see a visual cue of where the beat is in the measure, and which notes aware correctly placed or missed. Ideas are a "sing-along" bouncing ball or color coded notes as the rhythm is performed correctly or missed.

AggieTuba1 about Rhythm Taps