Universal apps (aka UWP apps, for Universal Windows Platform) have other benefits over traditional PC programs, too. UWP apps can interact with Windows' built-in notification and sharing features. UWP apps can display current info on live tiles in the Start menu—handy for things like weather, sports, and messaging. These secure apps also run in their own sandboxes so as not to jeopardize the rest of the system. Another appealing aspect of universal apps is their ability to run on different devices, including tablets, laptops, powerful desktop PCs, Xboxes, and the HoloLens, VR headsets, and the huge Surface Hub. The apps use Fluent interface design and cloud services. Another advantage: They dispense with the Registry, which can gunk up PC’s and prompt users to run tune-up utilities.