Very nice, always wanted something like this.

Liked: Sheet/No shit split

Would like:

- Ability to play with PC keyboard, other apps already have some type of interface to type with keyboard, of course it might change depending on keyboard layout, but it's pretty standard and it happens that the keys aren't usually alighned, so you can have one row be whites and the upper row being blacks.

- Maybe the waiting times between new notes in simon says can be faster? The "You Win" is a bit slow and it feels like forever, breaking the pace of the music.

- Difficulties can be increased as well, Simon Says currently seems like it only does very small intervals, (feels like sheet based is a bit different but maybe not). Maybe it can be configured to allow a wider range of intervals, making it more difficult.

The other similar product that I've seen is an app called Yousician that did this for guitar but it was microphone based. This is very neat.

I would also love a button to pause so I can poke around the keyboard to see what it sounds like.