https://play.google.com/store/apps/d...iblebody.atlas.
This is technically an app. It's getting hard sometimes these days to tell the difference between them and ebooks, as far as content is concerned. It is a 3D atlas of the human body.
Anyway, this appears to have stunning graphics. People seem to love it--it has a rating well over 4/5 at Google. It's regularly $24.99, but for the next four days, it is _99 cents_ at the Google Play store.