I am in the exact same situation (getting back into playing piano after more than a decade of not doing it). But rn, it is just a very rough proof of concept I am making in pygame, I might make something more proper with actual decent code quality if it actually works, but I thought the same about an app I made to limit keyboard usage on pc (was having some hand health problems), which worked pretty well, but I never ended up making and releasing a better version of it. But maybe