As someone who practices music 2 to 3 hours a day. I love this. I think people are coming at it as if it were a video game or designed to be a "portfolio project" but as a musician, I think you really created something awesome and lets me practice on what I'm most insecure about....my ear.
Hey polarbearballs (I feel a bit funny writing this name),
Thanks for the feedback - I'm glad you found it useful! I literally made it because I was thinking about the old Simon toy which plays a set of consonant notes (G, C, E, G) and thought it would be a fun way to practice playing by ear!
https://en.wikipedia.org/wiki/Simon_(game)