Money grab

I purchased this app during clerkship in 2011 / 2012. It was working well and was a valuable resource, but then all of a sudden this year it denied me access to the content and demanded a 50$ subscription in order to even use the app at all, even to access previous content. Im surprised this is permitted by apple, as this was not a condition of the app when originally purchased (for a hefty price). Ridiculous.

oxejin about Tarascon Pharmacopoeia, v3.2.0.1052