Change Collective as a mobile website, but they say that native apps are in the works. As for the business model, Rubin says, "We want people to pay for it. There will be free courses and free trials, but they want to get the best experts and get really good buy-in from people taking these courses, so it will be priced somewhere between a book and a seminar. And they intend to share a very healthy portion of revenue with the expert.