What don't you like about forums on mobile? The default phpBB skin is fairly good on mobile in my experience. I don't regularly participate on other forum softwares.
Some are okish. My biggest problems are ads pushing content off the limited screen space, "please download our app", some just don't render well and skip around.
Funny enough, i went back to find some examples of ones that really drove me crazy and they have gotten better(snowboardforum, nasioc and wetcanvas). One's even got a big announcement about their ui update on the front page.
I do think the threaded style of comments is much better then the forums though. Ignoring the problems of upvotes.
I started using reddit is fun years ago, so i guess i do use an app for that. My account defaults to old.reddit.com I have no idea what the new ui looks like, except for the login screen.
