Seems interesting but marketed to the wrong audience
This is really targeted at people with a background in having learnt to sing with formal education.
Immediately it drops technical jargon in without a drop of explanation.
"Sing as high as you can without falsetto" - I dont know what the technical definition of falsetto is.
First lesson: chest voice - what the heck is a chest voice.
Seer2 about
Vanido - Your personal singing coach, v0.3.3