Ha, that's been one of the benefits I've extolled to others about Flutter, being able to use a "real" programming languages. I'm coming from Swift. There are some things I miss but Dart holds its own.

It's been a learning experience moving from iOS to Flutter. In iOS I'm used to being able to broadcast notifications to the entire app whereas in Flutter notifications only go *up* the widget tree. How to send information downstream? ChangeNotificationProviders. Will check out your recommendations.

I not only need a service, but to be notified when values change. This is what I'm using to notify my screens when a purchase status has changed.

What would you recommend?

Fortunately what I was looking for was a "global" provider accessible everywhere in my app. In that case, you can wrap your App widget with the ChangeNotifierProvider. Then everyone will able to access it.

One can wrap the widget you're navigating to in the route with a ChangeNotifierProvider.value and pass the provider instance down that way. But you'd encounter a problem if you're using static restorable routes like me. (You don't have access to the provider instance at that point.)

No worries! :)

To answer my own question: Yes, you need to enroll in the "15% service fee". But Google puts it front & center when you first set up an account, so it's easy to do.

I've noticed that in WebViewWidget (pub.dev/packages/web...). I can add "padding" to the end of its content (and extra line break or two) but the scroll bar goes a little too far down when at the end. It uses native implementations of WebView so it's not using a standard Flutter Scrollbar. 🤷‍♂️

Do you know off-hand the way Google Play does it? It's similar, but I think it was 15% of first $1 million, no need to apply to a program.