Piano PA is an Android application designed to help piano students practice for the scales and arpeggios portion of their grades. The app provides randomly selected exercises for the user to practice from their selected grade. The developer, Jack Daniel Harding, created this app to help users save time by providing pre-built exercises and to focus on everything needed to know for a grade.

The app offers exercises for all grades and allows users to choose a specific exercise or the entire grade to practice. With Piano PA, users can easily practice and improve their piano skills without worrying about deciding what to practice. The app is user-friendly and perfect for piano students of all levels who want to improve their scales and arpeggios skills.