As a visual reference for asana form, this app can not be beaten.
A unique feature is an option to view chakra-based asanas. No other app Ive seen offers this option.
Photos are crystal clear and inspiring.
I bought the full app and, because it enhances my enjoyment of yoga and expands my variety of asana practice, I am delighted and thankful.
Uzeil about Yoga from the heart, v1.1