Since Im always driving, it would be very helpful to be able to loop predetermined intervals or notes so you could do the exercises without having to use the actual iPhone (so I could do my ear training with the car stereo, hands free). It would also come in handy for going to sleep and trying to do your ear training subconsciously while sleeping, in order to cement those elusive notes, chords, or intervals into your brain. That would put this app MILES AHEAD or anything similar. The only other way to do this is to record your own mp3 tracks and loop them on your player. But thats very time consuming for some people...please include this looping function in the next update!!!