@loyalnewb @ShaniKom @Fragglemuppet Others understand all of this much better than I do, but I believe:

Mastodon is one particular service in the fediverse; others include Pixelfed.

You can access Mastodon through a web browser.

There is an official Mastodon mobile app and other mobile apps like Tusky.

You *might* find an answer here:

https://fedi.tips/