Jazz Ears is designed to assist with ear training for improvising musicians. This app lets you interact with chords and scales in unique ways.
Dual Chord Mode places two chords next to one another. This approach can be very helpful in navigating between chords. In some cases you might focus on the common tones between the two chords/scales. This is useful for building fundamental skills and improving your ability to improvise over a chord for extended periods of time. The goal, for many, is to be able to improvise freely within the chord sounds. Of course, more advanced players will enjoy playing outside the chord sounds and exploring the tension that produces.
Clusters is a great way to exercise your ability to improvise over unexpected sounds. Here, the app will challenge you with randomly generated clusters (2-note, 3-note or 4-note) and morph them through the selected root movement. This is a great way to improve your hearing and response time to surprising chordal sounds.
JazzEars is available on iOS devices, such as iPhone and iPad.