Piano Companion PRO: chords is a versatile music theory app designed for songwriters, producers, teachers, and students. With its extensive library of piano chords and scales, the app provides a comprehensive resource for musicians of all levels.

The app features a flexible dictionary that allows users to search for chords and scales by keys or by using an external MIDI keyboard. It includes over 1500 piano chords, including major, minor, diminished, augmented, sevenths, and more. The app also offers over 10,000 scales, such as Ionian, Aeolian, Dorian, Phrygian, and many others.

In addition to its extensive chord and scale library, Piano Companion PRO: chords also includes a chord progression builder with common patterns, an interactive Circle of Fifths, and the ability to input custom chords and organize personalized chord charts and libraries. The app supports external MIDI keyboard input and MIDI output, allowing users to connect with their favorite DAW.

With its user-friendly interface and comprehensive features, Piano Companion PRO: chords is an essential tool for musicians looking to enhance their understanding of music theory and expand their creative possibilities.