Very good ear training tool!
I am an amateur musician who has played various instruments for some time, but never had any music theory training. Now that I am trying to learn and understand intervals this app is exactly what Ive been looking for. It works in two modes -- you can pick an interval and listen to it played (on your choice of instruments) or you have the app present various intervals and you see if you can identify them correctly. For the price, this app definitely gets 5 stars.
lp1756 about IntervalPhobia