DronePlayer is a fun practice app that provides configurable drone sequences. Drones are a great practice tool for working on intonation, scales and improvisation. This app provides three-note drones which can be played over a metronome. It also provides an editor which can adjust the number of drone steps in a sequence.
Single-note drones can be used to assist in improving intonation, studying scales and improvising melodies. Two-note drones can be used to assist ear training to develop your ears' abilities to accurately fill-in the harmonic gaps and improvise melodies. Drone sequences can be used to isolate chord progressions and train your ears to hear their way through the sequence.
DronePlayer is available on iOS devices, such as iPhone and iPad.