EnvironmentObjectExample.swift

struct HomeView: View {
    @EnvironmentObject var subscription: Subscription
    var body: some View {
        VStack{
            if subscription.isSubscribed{
                Text("Welcome Premium User.")
            }
            else{
                Text("Welcome to the App.")
            }
        }
    }
}

struct SubscriptionView: View {
    @EnvironmentObject var subscription: Subscription
    var body: some View{
        Button {
            subscription.isSubscribed.toggle()
        } label: {
            if subscription.isSubscribed{
                Text("Press to Unsubscribe")
            }
            else{
                Text("Press to Subscribe")
            }
        }

    }
}