Use the RESTORE function
Just received an update which made it seem like I lost my purchase and would force me to subscribe. However, all you have to do is use the RESTORE function; create a login if you dont have one. iOS will verify that you purchased the modules in the past and grant you the access. No subscription necessary!
Overall an outstanding app.
NavySDGuy about
IMAIOS e-Anatomy, v5.0.1