kbin lacks an API with an equivalent feature set. Ernest is aware of this and it's on the bug tracker. Any working apps for kbin are using site scraping as a temporary workaround. In layman's terms it means the app developer is doing a lot of extra work that will mostly get thrown away when the API rework is complete. Artemis is the only one currently doing this off the top of my head.
I'm ready to form a supervillain league with the sole motivation of performing unethical research experiments on your kind. This power must be brought to the masses!