From an early review in the App Store:
What a great app! This certainly will teach you more about drawing the human head than any book will. Plus- it’s on your iPhone so you can take it with you and learn more any time or any where. And it’s cool that it’s taught by Matt Busch- he’s a guy that draws for Star Wars and a bunch of other Hollywood stuff- who better to learn from? I definitely recommend this.
Available now for iPhone and iPad, go get it!