@brennansv Friendica has actually been around since 2010. Because it too uses ActivityPub, it’s largely cross compatible with Mastodon. This is why people on Mastodon can contribute to @fediversenews, which is a group hosted on a Friendica server.
Also, Friendica also uses Mastodon’s API. Mobile developers like @ivory should support it but they choose not to.
By the way, Android has better support for the rest of the Fediverse ?