Everyone knows there is CURRENTLY one apk/version. No one questions that. No one *cares*, because what people are asking for is TWO versions.
One free, one pro. Thousands and thousands andf thousands of other developers / apps do it this way. It is in fact very, very easy to do. Even converting users over to two versions, is very easy to do.
And truthfully, it wasn't the users that added tracking.. it was mobisystsems. You sold people something, they paid for it, then you *changed* it. Modified it, post-sale, to add tracking. So do you really think end-users care, if you have to do more work, to fix up the work you created for yourself?
Franky, I'm not really all that concerned.. because you WILL get caught eventually if the pro version still spies, and if it sells info to ad networks. However, pretending that it can't be done because there is currently only one version? That's just a slap on the face to users.