Telerik UI for Universal Windows Platform R2 2018 (version 2018.2.0515)
Before universal apps came along, creating apps for Windows 8.x Store and Windows Phone 8 was mostly a two-app project. Thanks to the universal Windows paradigm across devices, developers write code once and deploy on multiple Windows platforms with just small tweaks on the user interface. Telerik
UI for Windows Universal plays nice with Microsoft Visual Studio
and creates a Shared project template for Universal Apps allowing the same app to be written for Windows 8.1 Store and Windows Phone 8.1 with little code changes.