Hi., I've experience in developing apps for Windows 10 using C# and UWP (Universal Windows Platform) API. This API is primarily used in programs to be submitted to the Microsoft Store. In my previous programs I've used SQLite with Entity Framework as a storage option for my apps. Your app can be programmed with all these techs (C#, UWP, SQLite, and EF).
View my portfolio for the apps that are live at Microsoft Store and projects.