Very nicely designed, i am enjoying playback playing it. I would like to recommend two things, however.
Would you be able to change the color of the numbers on the red /pink face? The blue color you have makes the numbers appear to vibrate. Please change it to black, it would be much more comfortable on the eyes.
I am glad you have options to make note numbers, and put several in the same box, but would you please change the size of the first one that goes in? If would be nice to have it smaller also, rather than a white full size number.
Thank you, and keep up the good work!