This app is freely downloadable, however in-app purchase is required to unlock the contents. The complete Skeletal System and a few other contents are always freely accessible enabling you to try the app properly. "Anatomy 3D Atlas" allows you to study human anatomy in an easy and interactive way. Through a simple and intuitive interface it is possible to observe every anatomical structure from any angle. The anatomical 3D models are particularly detailed and with textures up to 4k resolution