I’ve heard there’s an official kbin app in very early stages. I don’t know who’s working on that, but it’s not in the 2023 roadmap that Ernest has shared in the sidebar - and it rightfully doesn’t need to be a main focus at this early stage. I know most people reading this have probably just gotten here as well, but I wouldn’t be surprised if a developer out there has already started. The PWA (web app) experience isn’t bad on mobile. It’s no native app though. Lemmy has that going for it, and I’d love for that experience here on kbin.
There is no publicly available API for kbin yet, though it’s intended. Once the lead developer has breathing room I’m sure that’s still on the to-do list.