In this chapter, we built an app for iOS and Android that tracked the location of a user. When we built the app, we learned how to use maps in Xamarin.Forms and how to use location tracking running in the background. We also learned how to extend Xamarin.Forms with custom controls and custom renderers. With this knowledge, we can create applications that perform other tasks in the background. We also learned how to extend most controls in Xamarin.Forms.
The next project will be a real-time chat app. In the next chapter, we will set up a serverless backend based on services in Microsoft Azure. We will use that backend in a later chapter once we have built the app.