All functions except sing the note and sing the phrase could be more user friendly. Apart from that its a great little tool. Especially considering the price!!!
Learn to sing in tune App tells you whether you are singing at the right pitch. Has all the voice training exercises a singing teacher recommends.
Won't work at all with either my headphone microphone or bluetooth headset and only works about 1/3 of the time with my phone's internal microphone.
Train to Sing in Tune – Vocal Exercise, Warm-Up, Ear Training and Singing Lesson