Just a couple of Combine Publishers to go.

Other Projects/Currency-SwiftUI/Currency-SwiftUI/AddCurrencyView.swift

@@ -42,7 +42,7 @@ struct AddCurrencyView : View {
                     }
                 }
             }
-            }.navigationBarItem(title: Text("Add Currency"))
+            }.navigationBarTitle(Text("Add Currency"))
     }
     
     private func select(_ currency: Currency) {

Other Projects/Currency-SwiftUI/Currency-SwiftUI/ConverterView.swift

@@ -37,6 +37,7 @@ struct ConverterView : View {
         let doubleValue: Double = Double(self.$baseAmount.value) ?? 1.0
         
         return ZStack(alignment: Alignment.bottomTrailing) {
+            NavigationView {
             VStack(alignment: .leading){
                 Text("From:").bold().color(.gray)
                 HStack{
@@ -69,7 +70,7 @@ struct ConverterView : View {
                         	}
                         }
                     }.onAppear(perform: loadCurrencies)
-                    .navigationBarItem(title: Text("Currenceis 💱"))
+                    .navigationBarTitle(Text("Currencies 💱"))
                     .navigationBarItems(trailing: Button(action: { self.isEditing.toggle() }) {
                         if !self.isEditing {
                             Text("Edit")
@@ -77,9 +78,11 @@ struct ConverterView : View {
                             Text("Done").bold()
                         }
                     })
+                HStack {
                 Text("Last updated: \(self.lastUpdated)").color(.gray).bold()
-            }
-             NavigationButton(destination: AddCurrencyView().environmentObject(self.userData)) {
+                Spacer()
+
+            NavigationLink(destination: AddCurrencyView().environmentObject(self.userData)) {
                 	Text("💰")
                 }.frame(width: 46, height: 46, alignment: .center)
                 .background(
@@ -88,6 +91,9 @@ struct ConverterView : View {
                         .border(Color(red: 0.7, green: 0.7, blue: 0.7), width: 1 / UIScreen.main.scale, cornerRadius: 23))
                 .foregroundColor(.white).font(.largeTitle)
         }.padding()
+                }
+        }
+        }
     }
     
     private func loadCurrencies() {

Other Projects/Currency-SwiftUI/Currency-SwiftUI/SceneDelegate.swift

@@ -37,12 +37,12 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
         // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
 
         // Use a UIHostingController as window root view controller
-        let window = UIWindow(frame: UIScreen.main.bounds)
-        window.rootViewController = UIHostingController(rootView: NavigationView {
-            ConverterView().environmentObject(UserData())
-        })
-        self.window = window
-        window.makeKeyAndVisible()
+        if let windowScene = scene as? UIWindowScene {
+            let window = UIWindow(windowScene: windowScene)
+            window.rootViewController = UIHostingController(rootView: ConverterView().environmentObject(UserData()))
+            self.window = window
+            window.makeKeyAndVisible()
+        }
     }
 
     func sceneDidDisconnect(_ scene: UIScene) {