Xamarin, recently acquired by Microsoft, is an ideal tool to do cross-platform xamarin app development. Xamarin extends the .NET developer platform with tools and libraries specifically for building apps for Android, iOS, tvOS, watchOS, macOS, and Windows primarily with C# in Visual Studio. xamarin developer can re-use their existing C# code, and share significant code across device platforms. xamarin mobile app development combines all the power of the native platform and also includes its features. https://www.yesitlabs.com/technologies/xamarin/