Add to Home screen is a feature available in modern smartphone browsers that allows users to install a shortcut of a Web App (PWA) to their Home screen, so they can access PWA easily with a single tap.

On Android, Chrome & Edge browser automatically shows a PWA install prompt, but in the latest update of chromium browser mostly pwa install prompt doesn't show automatically, so we've made a custom install android popup to trigger a pwa install prompt.

On iPhone, Safari browser has add to home screen feature but doesn't show a PWA install prompt automatically. So we have developed an iphone popup which educates & encourages the user how to add a PWA on iPhone's homescreen.

On desktop chrome browser, you can find an install button in the browser address bar.

You can't install a PWA from WebView or In-app-browser like Facebook's In-app-browser.