You could use Pushover for that, it works on iOS and Android - https://pushover.net
You can also send images captured from your camera in addition to just text notifications.
You can also send images captured from your camera in addition to just text notifications.
But the point is I want Apple to do it so I don't have to rely on a 3rd party. I already have to trust Apple with my private data and for the most part rely on their servers to be up.
I don't want to add another service to rely on.