A week or two ago, I got a notice from Google that certain things needed to be done to bring my Android apps up to speed (latest OS). The reason I got out of iPhone development is that I had to recompile and reupload every few months because each iOS update was not backwards-compatible, even for these simple apps. So after several years I'd decided to give up on app development altogether.
Until I had a thought about making a certain new game. I searched and didn't find any equivalents. Ah, what the hell, I'm paid in the developer program through August, at least. Starting from scratch on the new app, I was able to get all the links in line, making it simpler to recompile my other, older apps. So I did that. They were online within a day. It used to take a week or two for them to review, and one time they were stuck In Review for months and I hadn't realized it.
I'm all caught up now, and the latest app development suite is actually a lot easier than what I learned on (fortunately I kept a lot of notes about the procedures.) I'm still not going to make any money for a free app, but it would be cool if I had something go viral, as unlikely as that is to happen.