In the very beginning of the iPhone Steve Jobs preferred Web Apps over installed apps. As we all know they changed their mind in favor of the App Store. But it’s still possible to develop and use Web Apps on iOS. So why there are so few?
Apple can’t kick you out and they can’t take your money. Two keypoints of criticism so far. Are there other limitations?
On Android, progressive web apps have way more support.
If I release a web app for Android, there are APIs I can use that prompt native installation prompts the user can see. The user understands my web app can be downloaded like an app from the app store can be downloaded.
On iOS, your web app just looks like a webpage to users. It is technically possible for users to "download" your web app by adding the webpage to their home screen, but this scenario is tedious. The webpage that the iOS user added to their home screen always opens in Safari, so it just feels like a bookmark to the user.