Pocket Real Book - Jazz Standards is a free Android app developed by Jazz Chord Apps that offers a selection of chord charts for jazz standards and tunes found in the real book. The app allows you to browse for real book jazz standards and transpose them to any key, making it a handy reference for a jam session or practice.

The app provides many common jazz standards with their respective chord charts. However, it's important to note that melodies are not included due to copyright reasons. The app is perfect for those who want to quickly reference jazz chords without using a cumbersome fake book and practice real book jazz standards in multiple keys. Additionally, you can listen to tunes from a jazz recording and play along on your instrument by figuring out the key of the recording and transposing the jazz chords to that key.