diff --git a/!examples/InAppPurchaseManager/InAppPurchaseManager.xcodeproj/project.xcworkspace/xcuserdata/wangchujiang.xcuserdatad/UserInterfaceState.xcuserstate b/!examples/InAppPurchaseManager/InAppPurchaseManager.xcodeproj/project.xcworkspace/xcuserdata/wangchujiang.xcuserdatad/UserInterfaceState.xcuserstate
index e56ed46..c3542e2 100644
Binary files a/!examples/InAppPurchaseManager/InAppPurchaseManager.xcodeproj/project.xcworkspace/xcuserdata/wangchujiang.xcuserdatad/UserInterfaceState.xcuserstate and b/!examples/InAppPurchaseManager/InAppPurchaseManager.xcodeproj/project.xcworkspace/xcuserdata/wangchujiang.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/!examples/InAppPurchaseManager/InAppPurchaseManager/SubscriptionView.swift b/!examples/InAppPurchaseManager/InAppPurchaseManager/SubscriptionView.swift
index e218865..1dc68c2 100644
--- a/!examples/InAppPurchaseManager/InAppPurchaseManager/SubscriptionView.swift
+++ b/!examples/InAppPurchaseManager/InAppPurchaseManager/SubscriptionView.swift
@@ -15,47 +15,49 @@ struct SubscriptionView: View {
     let privacyPolicy = URL(string: "https://wangchujiang.com/copybook-generator/privacy-policy.html")!
     let termsOfService = URL(string: "https://wangchujiang.com/copybook-generator/terms-of-service.html")!
     var body: some View {
-        if !subscriptions.products.isEmpty {
-            VStack {
-                SubscriptionStoreView(productIDs: subscriptions.productIDs)
-                    .storeButton(.visible, for: .policies)
-                    .subscriptionStorePolicyDestination(url: privacyPolicy, for: .privacyPolicy)
-                    .subscriptionStorePolicyDestination(url: termsOfService, for: .termsOfService)
-                    .onInAppPurchaseCompletion(perform: { product, result in
-                        if case .success(.success(let transaction)) = result {
-                            print("Purchased successfully: \(transaction.signedDate)")
-                            await subscriptions.updatePurchasedProducts()
+        NavigationStack {
+            if !subscriptions.products.isEmpty {
+                VStack {
+                    SubscriptionStoreView(productIDs: subscriptions.productIDs)
+                        .storeButton(.visible, for: .policies)
+                        .subscriptionStorePolicyDestination(url: privacyPolicy, for: .privacyPolicy)
+                        .subscriptionStorePolicyDestination(url: termsOfService, for: .termsOfService)
+                        .onInAppPurchaseCompletion(perform: { product, result in
+                            if case .success(.success(let transaction)) = result {
+                                print("Purchased successfully: \(transaction.signedDate)")
+                                await subscriptions.updatePurchasedProducts()
+                                dismiss()
+                            } else {
+                                print("Something else happened")
+                            }
+                        })
+                    Button(action: {
+                        Task {
+                            await subscriptions.restorePurchases()
                             dismiss()
-                        } else {
-                            print("Something else happened")
                         }
+                    }, label: {
+                        Text("Restore Subscription")
                     })
-                Button(action: {
-                    Task {
-                        await subscriptions.restorePurchases()
-                        dismiss()
+                    #if os(macOS)
+                    .buttonStyle(.link)
+                    #endif
+                    .offset(y: -22)
+                }
+                .background(.background)
+                .frame(minWidth: 320, minHeight: 580)
+                .frame(maxWidth: 450)
+            } else {
+                VStack {
+                    if message.isEmpty {
+                        ProgressView().progressViewStyle(.circular).scaleEffect(1).ignoresSafeArea(.all)
+                    } else {
+                        Text(message).foregroundStyle(.red)
                     }
-                }, label: {
-                    Text("Restore Subscription")
-                })
-                #if os(macOS)
-                .buttonStyle(.link)
-                #endif
-                .offset(y: -22)
-            }
-            .background(.background)
-            .frame(minWidth: 320, minHeight: 580)
-            .frame(maxWidth: 450)
-        } else {
-            VStack {
-                if message.isEmpty {
-                    ProgressView().progressViewStyle(.circular).scaleEffect(1).ignoresSafeArea(.all)
-                } else {
-                    Text(message).foregroundStyle(.red)
                 }
+                .padding(.horizontal)
+                .frame(minWidth: 230, minHeight: 120)
             }
-            .padding(.horizontal)
-            .frame(minWidth: 230, minHeight: 120)
         }
     }
 }
diff --git a/README.md b/README.md
index 0918ee8..a2a295f 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,8 @@
   <p>
 		<a href="./README.zh.md">中文</a> • 
 		<a href="#frequently-asked-questions">FAQ</a> • 
-		<a target="_blank" href="https://wangchujiang.com/#/contact">Contact & Support</a>
+		<a target="_blank" href="https://wangchujiang.com/#/contact">Contact & Support</a> • 
+    <a href="https://github.com/jaywcjlove/devtutor/releases">Changelog</a>
   </p>
   <p>
     <a target="_blank" href="https://apps.apple.com/app/devtutor/id6471227008" title="DevTutor for SwiftUI AppStore"><img alt="DevTutor for SwiftUI AppStore" src="https://jaywcjlove.github.io/sb/download/macos.svg" height="51">
diff --git a/README.zh.md b/README.zh.md
index 2042f06..edc6a21 100644
--- a/README.zh.md
+++ b/README.zh.md
@@ -7,7 +7,8 @@
   <p>
 		<a href="./README.md">English</a> • 
 		<a href="#常见问题解答">常见问题</a> • 
-		<a target="_blank" href="https://wangchujiang.com/#/contact">联系&支持</a>
+		<a target="_blank" href="https://wangchujiang.com/#/contact">联系&支持</a> • 
+    <a href="https://github.com/jaywcjlove/devtutor/releases">变更日志</a>
   </p>
   <p>
     <a target="_blank" href="https://apps.apple.com/app/devtutor/id6471227008" title="DevTutor AppStore"><img alt="DevTutor AppStore" src="https://jaywcjlove.github.io/sb/download/macos.svg" height="51">