FediHood is a social network built around the place where you live. You choose a city and the topics you care about, then read what neighbours are saying and join in.
It stays a normal fediverse app. Your posts can reach Mastodon, PixelFed, Misskey and the rest, and posts from those servers reach you too.
Source code: https://git.holos.social/tom79/FediHood
There’s only one instance so far: https://fedihood.social/
If new instances are created, they should show up here: https://fedihood.fediverse.observer/list
I feel like it should still work if making a backup didn’t clear a browser, and restoring to a second browser should let both work.
key management is lot harder. signal does not support multi-clients for a reason, you can look at the history of matrix with encryption to find out what are the problem is. I’m not sure they even fixed or just know of all the failure modes of it.