There isn't a native mobile app, but this website is what's known as a "progressive web application". This means that you can just add it directly to your home screen and it will act app-like. See this thread for exact iOS instructions. Android is similar but does depend on which browser you're using.
valaramech
joined 1 year ago
The root path for kbin is currently always "all". I actually have a PR up right now to change this to what people actually expect to happen.