Decent Vocal Drilling support
The app makes a good attempt at keeping you drilling vocal exercises for issues such as Breathiness, Tension and Cracking. Its inexpensive, so worth the money.
I found out after completing the exercises that it is actually evaluating on pitch (good thing too) - but why on earth does 1.3.2 not give you a score after each exercise to encourage you perfect the last one before going on to the next.
Martin Cleaver about
Voice Tutor, v1.3.2