Really bad. For example, if you want to have push notifications on an iOS app, there's no way to do it via a website or a PWA. And there's no way of sideloading

Really bad. For example, if you want to have push notifications on an iOS app, there's no way to do it via a website or a PWA. And there's no way of sideloading an app at all for nearly all users. So then the App Store is your only way, which means you must not ever dare have any kind of nudity in your app, since that's an instant rejection during reviews, particularly if you're an indie dev. So I was basically forced to drop iPhone support, to the dismay of some users who would have liked to pay for it (and mine).