Except that these days it's more common to offer the app for free and then the user chooses or not to get premium content via in-app purchase. A web app or webs

Except that these days it's more common to offer the app for free and then the user chooses or not to get premium content via in-app purchase. A web app or website can quite easily offer an upgrade to premium content if the user is already using that service. More than monetization, the app store provides stronger discover-ability than web apps.