Active Ear is a free iPhone app developed by Warren McPherson. It falls under the category of Multimedia, specifically Music & Radio. Designed for musicians of all skill levels and instrument types, Active Ear aims to improve your ability to identify pitches, intervals, chords, and progressions using only your ear.

The app offers a Practice Mode where you can customize the challenges to focus on specific areas you want to improve. This allows you to tailor your training to your individual needs and interests. Once you feel confident in the Practice Mode, you can test your understanding in the Quiz Mode of the app.

Active Ear comes with six Ear Training Programs: Pitch Recognition, Interval Training, Chord Quality, Bassline Training, Progression Training, and Chord Inversions. Each program offers a range of exercises, from beginner to advanced, ensuring there is something suitable for everyone.

With its comprehensive training programs and customizable challenges, Active Ear is a valuable tool for musicians looking to enhance their ear training skills.