(AnkiDroid has always been run independently, which is good, considering the state of the iOS client, which has always been neglected.)
I don't mind so much that it's paid, given how much use I get for the price, but it sucks knowing it sucks and not being able to help make it better.
(I think the data model underneath Anki is...showing its age (and lack of explicit design) and building that on top of it would not be too easy. I've thought about it a few times.)