I've been working for the past week on a new kbin app. At the moment, it's just a prototype and only the "Feed" view has content (you can't sign into an account or post anything yet); you can see threads, thread images, thread comments, thread links, and thread votes/boosts. You can also change the "Theme Mode" and "Instance Host" in the settings.
The Mags tab shows mags but clicking them doesn't do anything
Changing Instance host to "kbin.social" gives me a "something went wrong" when I go back to the Feed tab. Also the magazines now give me the same "something went wrong"
The individual magazine's page has not been implemented yet; I might try to work on that tomorrow. Unfortunately, kbin.social does not support the API yet (that's why karab.in was the default).
I was using the flutter_markdown package to render markdown. Fortunately, the text style can be changed, so once I get around to it, I'll fix the color issue.