Very useful
Terrific app...though a little scary to see how often you "sing in the crack" or drift down in pitch. Definitely helps improve the sense of tonal center and interval accuracy. As others have mentioned, the big thing that is MISSING is the ability to review what you record.....it scrolls off the screen and is gone forever. Seems very odd. Or if playback/review is an option today, it is hidden with the skill of Wheres Waldo! If you are a singer, though, invest a few $ in this app!
Jp6741 about
Do Re Mi Voice Training