The Prog Machine is an app to generate incredible chord progressions. From a single interface, you will have at your fingertips five types of chord progressions to inspire you and help you in playing or composing songs in any style.

Chool is not another guitar chords app. Here you won´t find hundreds of boring guitar chords that everyone uses in their songs over and over again. This is a curated selection of beautiful guitar chords to bring your songs to the next level.