In this chapter, we created a simple e-commerce Angular app that used Nest.js to get products from MongoDB. Then, we added a service worker to make the app work offline. This also allows us to add the app to our home screen so that we can use it as a standalone application. In the end, we found ways to update our application whenever a new version of the service worker is available and able to install a new version.

Now, you should be able to convert any Angular web application into a Progressive Web Application and understand various configurations to make it work offline. You will have also learned how to improve app experience by using different strategies, such as showing the network's status, updating to a new version of apps using in-app notifications, and so on.

In the next chapter, we will create a native mobile app for iOS and Android by using the Ionic Framework alongside Angular. We will create an application to audit apartments and use the Firebase Realtime Database to save the updates to the audit in real time. Finally, we will use ngx-formly to create dynamic forms without the need to write a template to do so.