If anyone is looking for a digital tool to practice Piano I have made a FREE website called Piano Gym!
It's flash cards but for Piano, and works with MIDI Piano connected to your computer.
We use spaced repetition to schedule the flash cards and all you have to do is show up every day and do your reps! The big goal is to remove friction from learning and allow anyone to make their own content if they want to.
I'm hoping in a few weeks to make a show hacker news post, but right now I'm bug fixing and working on getting our curriculum loaded up. Once that's done everything is ready to go! So come check it out if you're looking for a new approach to Piano practice and learning!
And if you're really into this idea, we're on Patreon and appreciate any help making the dream come true! https://patreon.com/PianoGym