As a user, I can tap Install on a web page and an APK is downloaded to my device so that my phone's native package installer can install the app.

As a user, I need to be made aware of that I myself have to enable apps to be installed from unknown/unverified sources.

As a user, I would like to be able to launch the app immediately after install

As a user, I would like the web app to perform as much as possible as a native android app.

As a user, I can have my phone check for updates and have my phone download them so that I may keep my webapps safely up-to-date.

As a user, I can trust that my phone will automatically keep my webapps up to date.

As a user, I would like to be able to remove/uninstall the app at any time.