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Sup is a New Messaging App by the Creator of Pixelfed
(wedistribute.org)
A community dedicated to fediverse news and discussion.
Fediverse is a portmanteau of "federation" and "universe".
Getting started on Fediverse;
Seems you edited your comment to add new points. Lemmy doesn't notify users about changes to comments/posts they replied to, unfortunately.
Good to know. I prefer to never use my phone number for sign ups.
They seem to put a lot of effort to centralize their app though - you can't setup your own server and talk to other signal users.
Yes, but you need to figure out how to verify signature keys on android + manual updates, it's just inconvinent if you compare it to F-Droid Signal devs so dislike for no good reason.