you can also try making an account on a lemmy instance, then using a lemmy app (memmy on iOS I guess?)
edit: I’m giving “connect for lemmy” a try now while I wait for Sync to release a version. Getting used to a new UI and/or setting it up to your preferences is always a bit of a struggle, but so far it seems plenty good enough for a bit of literal shitposting
edit: also just try the main page of your instance, installed as a PWA on your phone. It actually works really well