Hello.

This post explores how to use Android Intents to detect if a native app is installed. This technique is useful for web apps that also have a native app version, especially for managing push notifications. It allows developers to seamlessly redirect users to the app if it's installed or fall back to the web experience. The method involves creating a special intent URL that opens the app if present, or redirects to a specific URL with a hash fragment. By monitoring the hash change in the browser, the web app can detect if the app launch failed and proceed with web-based push notification registration. While helpful, this approach highlights the complexity of managing push notifications across web and native apps, reinforcing the argument for web-only solutions.