I used Flym for a while and went to download the source one day, in fear of it suddenly disappearing, and apparently updates are blocked by Google, and the dev gave up? I'm very curious to know more about it: https://github.com/FredJul/Flym

Since then I've used Feeder, it's similar (also free, no ads, can scrape full articles) but is missing a few things that I liked about Flym. It was easy to export my list of feeds (OMPL file, I think) and import into Feeder: https://play.google.com/store/apps/details?id=com.nononsense...