Chords: intervals and scales is a free music trainer app developed by Alexey Ovod for iPhone. This multimedia application is designed to help users learn piano, guitar, or ukulele sheet music. With a focus on memorizing chords, intervals, and scales, this app offers three basic exercises in mastering music theory.

One of the exercises focuses on musical intervals, where users will learn the basics of musical theory, solfeggio, and harmony. By practicing building musical intervals from any note and recognizing notes and intervals by ear, users can develop their music theory skills throughout the day.

Another exercise in the app is dedicated to chords for piano and guitar. Users will learn major, minor, triad, and seventh chords, as well as jazz and blues guitar chords. The app allows users to practice using a MIDI keyboard or microphone, making it accessible for both piano and guitar learners.

The third exercise covers musical modes and scales for piano and guitar. Users will learn natural, harmonic, melodic major and minor scales, as well as various musical modes such as Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, and Locrian. This knowledge is essential for every musician and can help in composing songs, writing improvisations, and melodies.

Chords: intervals and scales provides a comprehensive learning experience for those interested in mastering music theory and improving their piano, guitar, or ukulele skills. Whether studying independently or with a music teacher, this app offers a range of exercises to support users on their musical journey.