How to send Push notification to iOS WebApp (PWA)?
Unfortunately, push notifications are not yet available on IOS.
Right now, Safari only supports push notification on Mac.
If you want push notifications on IOS, you have to develop native app.
There is a workaround,the Wise Notifications plugin
It takes 5 min to setup and the website visitors can subscribe with 2 taps maximum. It uses a notifications hub app to make it possible.
While not as easy to subscribe (if the visitors don't have the hub app already installed) as usual web push notifications, it is the only quick way to reach your iOS audience.
The alternative is for you to create a native/hybrid iOS applications, publish it to the AppStore, implement Apple Push Notifications in the app and server and send notifications via APNS (Apple Push Notification service). This requires a quite a lot of effort (time or money or both).
for know push notifications are supported (not yet) on IOS.
Safari only is the only browser in IOS, others use webview (based on Safari) with just a UI.