* There&#x27;s also the 30% cut, which makes no sense when you&#x27;re talking about a well-known and well-trusted app like Sketch. Nobody fears installing Sketch outside of the MAS, so BC may as well host it themselves. I imagine the average new Sketch user discovers the app via recommendation, or article on the web, so BC will likely make more money away from the MAS. Especially when you factor in the improvements: faster bugfixes, and new features they can without sand-boxing.