I've only tried Jerboa and Thunder, but Thunder's compact layout is actually like RiF. It's more like Sync than RiF though. Honestly impressed by how good it is. I tried cloning and tweaking Jerboa's UI to my liking but Thunder just werks for now.
You swipe the comment to the right and a thing pops up. It's unclear when it is downvoting or upvoting because what it then does doesn't seem to match the one you selected.
If you swipe slightly right it'll upvote, and a swipe further right will downvote; if you do it slowly you can see the animation and color to the left of the post changes. Right now the way it's coded there's some lag between your swipe and the vote count changing, which the dev said he hopes to address soon!
There was also some talk of toggleable voting arrows as an alternative to swiping, but I don't know the timeline on that right now :)
So I am using lift off but how do you upvote posts from other instances ? It says unable to upvote coz youre not signed into lemmy.ml.
Is there a way to upvote post from other instances?
I am pretty sure that you can upvote most of the stuff on instances you don't have an account for. However some instances require you to apply for an account rather than just singing up (eg Beehaw was like that for me). An admin has to manually click a button for you to become a member. In those cases you can not just upvote or comment on one of those instances without an account.
I think it's to prevent a flood of bots on some of the instances.
Not entirely sure if I got it right, though!