I added a second lemmy account to Sync and on that second account posts aren't marked as read after I opened them. Sometimes they get marked as read after a reload, but only sometimes.
For me it's the super compact view that I miss. None of the other apps comes close to how clear and tidy Sync looks, and none have the option to put the preview on the left and the "view" button on the right. I guess I could get used to it being different, but currently I have multiple Lemmy clients installed but I keep gravitating back towards Sync even though the posts aren't marked as read which is seriously annoying.
I have Sync and 7 others installed, and I'm only using Sync just because of these small missing things.. It would probably be better if I ranted in their sub's.
Summon looks nice. Smooth. Hold to preview is OK, but it would be nice if the preview closed when not holding anymore.. I'll seriously give this one a try..