iReal Pro is awesome. When playing music with new people (especially jazz), it feels like everyone has it, and you can quickly make sure you're playing the same

iReal Pro is awesome. When playing music with new people (especially jazz), it feels like everyone has it, and you can quickly make sure you're playing the same charts. It's also available on Android, and it's a one-time payment, no-subscription app. Easily one of the most valuable music purchases I've made.