The paid version $24.99 has exactly the same-very basic skeleton as free version. There is no information on Joints at all. You will need to purchase them separately at 5.99$ each.
To me, bone structure and joints are "essential", Im disappointed and surprised that neither are included for the price I paid for.
I contacted the company, they were very responsive, patient and explained to me their ads did indicate the content. I was refunded for my purchase. Great customer services!
In terms of the app itself: the graph is very good, easy to learn and navigate. As long as you understand what youre getting, then its probably the best app. you can get in todays market.
casatishum about Essential Anatomy 5