Comment by littlecranky67

> Is there something similar like this on Android?

It works out of the box on Android (without adding to the homescreen or installing as PWA). For iOS, you need to tap the "share" button in safari, scroll down, and "Add to homescreen".

If you want to test this out (on either platform), you can try my PWA where I implemented this (https://lockmeout.online). In the users settings, you can even add several devices (browser, phones etc.) and send a test notifications to either a single or all devices. Installation instructions for iOS and Android are there (since it is a PWA, you just need to press the right buttons in the browser, there is not actual installation). PWAs can also be installed on Desktop (Chrome and Safari).

Btw. the PushNotification API is not device/vendor specific. I use the same code to send out notifications for mobile (iOS, Chrome Android) and Desktop (safari, firefox, chrome etc.). I also do not use any third party for sending, but do it from my server. And hell yeah, not having to create these clumsy serviceworkers will simplify my code a lot.