I've been using Saturn for iOS for a bit now and ever since the most recent updates, it seems very enjoyable.
It has most of the same features as other third party Mastodon apps, but with its own look and feel.
I think the only thing that could make it better for me, would be if it had a "Hashtag Drawer" type feature for the composer so that I could save individual hashtags with CamelCase for re-use.
It's something I've been wanting in a Fediverse app for SO long.
But if you want a new app to mess around with, Saturn is very good from what I've seen with it.👍