Was working on a piano learning app already a while ago, app isn't working at the moment, due to changes in Flutter after last updates. I've stoped working on this project and decided to remake it in Ionic Capacitor framework, beacuse JavaScript libraries (in particular https://github.com/patikapusula/osmd-player-react) would enable me to speed up work on this project, especialy as im lacking music theory knowledge and Flutter packages are somewhat way behind JavaScript in this area.
You can see video of the app in action here
