Lovely simple game. I have played a minigame very similar to this before and found the idea intuitive. I got 32 seconds and I'm quite happy with that 21.5 seconds and I would really appreciate a quick-restart button at this point!
I'm pleased that you let us un-invert the controls in the settings because I couldn't handle the default. But once it was set the way I'm used to, I found it easy to slow down and speed up on all the right bits.
Some music may have been nice.
I haven't tried the multiplayer aspect but that seems really interesting.