2559!
Seems like a good start can make or break your record, so a button check to start the game would be very nice to have, as a restart hotkey/option would be.
edit: one can accidentally press again when finishing (which can happen when your finish is up top and you're mashing to touch it quicker) and that resets a record, it was my best run by far but I didn't see it. how about have at least a "double click proof" for it?
even if not for this one, I hope I'm at least being helpful for future project in terms of user experience. the game feels great to me and invites to play and compete, I'll send it to a couple of my friends; so I'm trying to describe the things that can hinder the competitive feel to it, basic failsafes. Sorry if you're well aware and just don't treat this as a big deal :)