I love how easy it is to use for both my personal music as well as professional work! The app has tons of great features that are very useful, whether its being able too listen through bluetooth or just getting some help from an online instructor if you need assistance with any specific piece in your lesson plan/workbook etc..
It's also fun because sometimes there will be times when things wont play correctly (like audio problems) but they usually fix them quick enough so i don't mind at all! They have helped me improve greatly over time which was something else I didn't know would happen until now.