Jazz Chords is a free Android app developed by Tormod Vinsand that provides a powerful yet simple way to learn and play 27 extended and altered jazz chords on piano. The app is designed to help users who have difficulty playing chords with extensions and alterations. With this app, users can see and hear the chords being played in root position with the names of the chord notes written below. Additionally, the app provides smart shortcuts for most of the chords. The chords are played in real-time on a grand piano, with written note names, and no written music. The app includes 342 videos that can be streamed over Wi-Fi or cellular or downloaded for offline viewing.