The apps are a useful integration of the standard functions offered by smart phones and tablets. One of the latest developments in the KNX world is represented by the “ETS® APPS”. The apps are developed by KNX members thanks to the provided API, which already includes many basic functions. This allows nearly unlimited creative ideas. The compatibility of the entire system is maintained as all apps have to be validated by the KNX Association and are available exclusively at the KNX online shop.