The only practice tool youll need
This is a tuner, metronome, recorder and more. You can plays not just drones of single notes but of chords as well. You can make the drones have vibrato. This is a superior app that gives musicians the advantage to take their craft to another level. I would recommend this app to any musician who wishes to further their playing
jdd2014 about
TonalEnergy Tuner & Metronome, v1.4.2