Folks— Most Lemmy client apps are on the phone. I am looking for a FOSS phone app that works offline. That is, the phone has no data plan and only occasionally connects to public wifi hotspots. I do not want to be entering login passwords and reading and writing posts when I am connected. Reading and writing posts interactively needs to happen offline. Typical workflow: when I meet people at a bar/cafe, I need the app to sync over the public wi-fi without using my attention. It should post my comments and fetch threads for which I am active, for offline access later. It needs to support multiple accounts spanning multiple instances.

Does anything like this exist? Or do all Lemmy/kbin/mbin phone apps demand your realtime attention when connected?