More Documentation - or Any - Would Be Useful
It’s very good. Some documentation would be helpful. How to play is obvious. How play is scored, specifically how to earn the next star in a level, not so much. Patterns are limited. Additional levels with more accidentals and more key signatures would have been useful and extended play. Doesn’t seem like it would have taken much more effort. Ability to select levels by key signature would be useful, e.g., if I wanted to focus on Db Major.