Web app install banners are still a new technology, and the standards are in a state of flux. For the latest information, consult Google's page on web app install banners--https://developers.google.com/web/fundamentals/engage-and-retain/app-install-banners/. That said, I hope this chapter was helpful in illuminating the possibilities of the banners, and the current state of the technology.
Now that we've made our app bigger and better, it's time to slim down, and focus purely on performance. See you in the next chapter!
