The Privacy Dad blog published a good list of open source feed readers for Android. My current set-up is a Miniflux running as a PWA (I am running a Miniflux instance with Pikapods). But before I switched to Miniflux, I was using an open source local feed reader for Android that is not on The Privacy Dad list: Handy Reading. Handy Reading is a fork of the now-unmaintained Flym RSS and is a very nice feed reader. It can extract full text and allows the user to set how often each feed is checked. What sets it apart from similar solutions, however, is that you can save articles from outside your feeds into Handy Reading, making it a quasi read-it-later solution as well. To be sure, it is not as good a read-it-later tool as something like Omnivore, Wallabag or Shiori, but it is a nice addition to an all-around solid local open source feed reader.