Its pretty good for the price. Its a series of exercises that he both demonstrates and does with you, (thats if you can keep up with him).
Thats the major flaw. When it comes time to do the exercise with the app its nearly impossible to keep up. He flies through those scales. As a beginner, you end up sacrificing doing each exercise correctly or quit. It should have an adjustable speed or at least he could have taken the extra 10-15 minutes and do each one slower.
I know it 4.99 but I would have spent a few more dollars to have him give us more than one speed option.
Mandm6987 about VoixTek Voice Training