Following its Worldwide Developers Conference, Apple released updated App Store guidelines that included a new rule allowing it to ban apps created by a "commercialized template or app generation service." The understanding at the time was this was part of Apple's larger App Store cleanup, and the focus was on helping rid the marketplace of low-quality clone and spam apps. But things have since changed. A number of app-building companies that had earlier believed themselves to be in the clear are now being affected, as well.