Basically, mark posts as read automatically while scrolling through your timeline, without needing to visit the comments. Fennec has this, and I’d like to see if there’s any others.
iOS advice:
Memmy and Voyager do this, that’s what I use so far. Memmy is pretty bare bones you can’t edit, and scrolling to the top to refresh + hide read posts is more cumbersome. It feels like a fighting game combo lol
Voyager also gives you a nice button to immediately hide everything read
Combined with hiding all subscribed communities in all, seeing read posts in community view, and the New Comments sort, it’s really transformed the usefulness of Lemmy.