This is insane to me.
-Apollo looked like it was designed in two seconds by a fourth grader. It had a very Android-y look, even though it was designed natively on iOS. It looked like the mobile equivalent of old reddit before the redesign. Maybe that's why some people liked it: they also preferred using old reddit?
-I can understand that it may have had some additional functionality that some users may have liked. But I've always preferred the official app in terms of UI and it's not particularly close.
-Now, Tweetbot's loss really upset me. I use twitter exclusively through various lists (politics, technology, friends, etc), but I can't browse twitter that way using the official app because the official app doesn't remember where I left off. So I can't use twitter the same way using the official app that I used it with Tweetbot. That was a real loss. Whereas with Apollo, there's no loss for me at all.