Terrible TERRIBLE upgrade

I have never before seen a great app take such a huge leap backward following an upgrade. What used to be essentially a perfect app, has now been downgraded, with performance and usability now resembling the clunky laggy web interface you get when you pay $80/year subscription fee or whatever it is they charge. Why would a user like me who legitimately paid a one time fee of about $150 for all of the modules in the app via the app store a few years ago want to pay an annual fee to use the crappy web interface when I can continue to use the previously awesome app? Im guessing that they finally asked themselves that question too. Partial anatomic labeling (ie the small box you can place over an area so as not to be overwhelmed by labels from other anatomic areas) is now only available to premium subscribers. I thought it was against the general principle of the app store to not allow developers to start charging for features that have previously been purchased by a user. Not happy.

Mwc73 about IMAIOS e-Anatomy, v5.0.2