Global.InputForms provides a Xamarin.Forms essentials controls for iOS and Android apps.

• Available on NuGet: Global.InputForms
• Add nuget package to your Xamarin.Forms .netStandard/PCL project and to your platform-specific projects

After installing the NuGet package, the following initialization code is required in each application project:

• iOS - AppDelegate.cs file, in the FinishedLaunching method.

Global.InputForms.iOS.InputForms.Init();

• Android - MainActivity.cs file, in the OnCreate method.

Global.InputForms.Droid.InputForms.Init(this, bundle);

This calls should be made after the Xamarin.Forms.Forms.Init() method call. It is recommended to place this calls in the following files for each platform: Once the NuGet package has been added and the initialization method called inside each application, the InputForms APIs can be used in the common PCL or Shared Project code.

Here samples and wiki about checkBox and CheckButton

Here samples and wiki about CheckGroup

Here samples and wiki about RadioGroup

Here samples and wiki about RateGroup

Here samples and wiki about ButtonContent

The MIT License (MIT) see License file

Feel free to do it for UWP! I think it's not a big deal, but got no time and no need for now :()