Nice concept! Obviously it's got a short playtime (unless I'm missing something other than just random mode, please let me know if I am, I'll come back to give it a try!), but it does what it was designed to do really well. (I got down to +8 ms, I'm proud of myself, my self-metronome usually sucks for rhythm games. Question is, can I use this game now as a way to set latency in rhythm games? XD Who knows!?) I think for me, an interesting feature for improvement for the randomizer would have been giving a different rhythm as the metronome and having you still somehow try to count out 5 full beats!