So far, 6wunderkinder delivered a todo-list app for several platforms. Wunderkit is yet to be delivered, and I just don't see how a free app that is used by some people can be stated as "successful", especially given the fact that the most visible competitors, Things and Omnifocus are premium-priced. Spread: Certainly. Success: Menotreallysure.
Yes, but cultured code is not presenting themselves as if it were the hottest new startup ( they are btw not in berlin but in stuttgart ), they have just created an awesome app.