diff --git a/README.md b/README.md
new file mode 100644
index 0000000..c72fd28
--- /dev/null
+++ b/README.md
@@ -0,0 +1,14 @@
+## Prerequisute
+
+### Flutter Sample App
+
+- flutter 3.10.0
+
+### Xamarin Sample App
+
+- .NET 5+
+  - Xamarin Workload in Visual Studio
+
+## Note On Credential
+
+This sample app isn't meant to be relased or used so no attempt is made to secure the keystore.
diff --git a/XamarinFormSample/Sample.Shared/MainViewModel.cs b/XamarinFormSample/Sample.Shared/MainViewModel.cs
index ed0e0dc..597e934 100644
--- a/XamarinFormSample/Sample.Shared/MainViewModel.cs
+++ b/XamarinFormSample/Sample.Shared/MainViewModel.cs
@@ -19,7 +19,7 @@ public class MainViewModel : INotifyPropertyChanged
         public delegate void ErrorRaisedHandler(object sender, Exception e);
         private AuthgearSdk authgear;
         private readonly IAuthgearFactory authgearFactory;
-        public readonly string RedirectUri = "com.authgear.exampleapp.xamarin://host/path";
+        public readonly string RedirectUri = "com.authgear.migrate.tool.xamarin.flutter.sample://host/path";
         public string ClientId { get; set; } =
             Preferences.Get("authgear.clientID", Config.AuthgearClientId);
         public string AuthgearEndpoint { get; set; } =
diff --git a/XamarinFormSample/XamarinFormSample.Android/MainActivity.cs b/XamarinFormSample/XamarinFormSample.Android/MainActivity.cs
index 3c46bf7..f6ad7ee 100644
--- a/XamarinFormSample/XamarinFormSample.Android/MainActivity.cs
+++ b/XamarinFormSample/XamarinFormSample.Android/MainActivity.cs
@@ -10,7 +10,7 @@
 
 namespace XamarinFormSample.Droid
 {
-    [Activity(Label = "Authgear SDK XamarinFormSample", Icon = "@mipmap/icon", Theme = "@style/MainTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize )]
+    [Activity(Label = "Authgear Migrate Tool XamarinToFlutter Xamarin", Icon = "@mipmap/icon", Theme = "@style/MainTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize )]
     public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
     {
         protected override void OnCreate(Bundle savedInstanceState)
diff --git a/XamarinFormSample/XamarinFormSample.Android/Properties/AndroidManifest.xml b/XamarinFormSample/XamarinFormSample.Android/Properties/AndroidManifest.xml
index 7eea42e..2333639 100644
--- a/XamarinFormSample/XamarinFormSample.Android/Properties/AndroidManifest.xml
+++ b/XamarinFormSample/XamarinFormSample.Android/Properties/AndroidManifest.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.authgear.exampleapp.xamarin" android:installLocation="auto">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.authgear.migrate.tool.xamarin.flutter.sample" android:installLocation="auto">
 	<uses-sdk android:minSdkVersion="21" android:targetSdkVersion="33" />
-	<application android:label="Authgear Xamarin" android:theme="@style/MainTheme" android:usesCleartextTraffic="true"></application>
+	<application android:label="Authgear Migrate Tool XamarinToFlutter Xamarin" android:theme="@style/MainTheme" android:usesCleartextTraffic="true"></application>
 	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 	<queries>
 		<intent>
diff --git a/XamarinFormSample/XamarinFormSample.Android/WebAuthenticationCallbackActivity.cs b/XamarinFormSample/XamarinFormSample.Android/WebAuthenticationCallbackActivity.cs
index f03f3fe..b7bb330 100644
--- a/XamarinFormSample/XamarinFormSample.Android/WebAuthenticationCallbackActivity.cs
+++ b/XamarinFormSample/XamarinFormSample.Android/WebAuthenticationCallbackActivity.cs
@@ -12,7 +12,7 @@ namespace XamarinFormSample.Droid
     [Activity(NoHistory = true, LaunchMode = LaunchMode.SingleTop, Exported = true)]
     [IntentFilter(new[] { Android.Content.Intent.ActionView },
         Categories = new[] { Android.Content.Intent.CategoryDefault, Android.Content.Intent.CategoryBrowsable },
-        DataScheme = "com.authgear.exampleapp.xamarin")]
+        DataScheme = "com.authgear.migrate.tool.xamarin.flutter.sample")]
     public class WebAuthenticationCallbackActivity : Xamarin.Essentials.WebAuthenticatorCallbackActivity
     {
     }
diff --git a/XamarinFormSample/XamarinFormSample.Android/XamarinFormSample.Android.csproj b/XamarinFormSample/XamarinFormSample.Android/XamarinFormSample.Android.csproj
index 2b95a6b..d485e54 100644
--- a/XamarinFormSample/XamarinFormSample.Android/XamarinFormSample.Android.csproj
+++ b/XamarinFormSample/XamarinFormSample.Android/XamarinFormSample.Android.csproj
@@ -37,6 +37,11 @@
     <AndroidEnableProfiledAot>false</AndroidEnableProfiledAot>
     <BundleAssemblies>false</BundleAssemblies>
     <MandroidI18n />
+    <AndroidKeyStore>true</AndroidKeyStore>
+    <AndroidSigningKeyStore>D:\work\authgear-tool-migrate-xamarin-flutter\keystore-main.jks</AndroidSigningKeyStore>
+    <AndroidSigningStorePass>Abcd1234!</AndroidSigningStorePass>
+    <AndroidSigningKeyAlias>main</AndroidSigningKeyAlias>
+    <AndroidSigningKeyPass>Abcd1234!</AndroidSigningKeyPass>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -47,6 +52,11 @@
     <WarningLevel>4</WarningLevel>
     <AndroidManagedSymbols>true</AndroidManagedSymbols>
     <AndroidUseSharedRuntime>false</AndroidUseSharedRuntime>
+    <AndroidKeyStore>true</AndroidKeyStore>
+    <AndroidSigningKeyStore>D:\work\authgear-tool-migrate-xamarin-flutter\keystore-main.jks</AndroidSigningKeyStore>
+    <AndroidSigningStorePass>Abcd1234!</AndroidSigningStorePass>
+    <AndroidSigningKeyAlias>main</AndroidSigningKeyAlias>
+    <AndroidSigningKeyPass>Abcd1234!</AndroidSigningKeyPass>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Mono.Android" />
diff --git a/XamarinFormSample/XamarinFormSample.Android/XamarinFormSample.Android.csproj.user b/XamarinFormSample/XamarinFormSample.Android/XamarinFormSample.Android.csproj.user
index 64ee147..b512129 100644
--- a/XamarinFormSample/XamarinFormSample.Android/XamarinFormSample.Android.csproj.user
+++ b/XamarinFormSample/XamarinFormSample.Android/XamarinFormSample.Android.csproj.user
@@ -4,5 +4,6 @@
     <SelectedDevice>Google Pixel 7a</SelectedDevice>
     <SelectedPlatformGroup>PhysicalDevice</SelectedPlatformGroup>
     <ActiveDebugProfile>Google Pixel 7a %28Android 14.0 - API 34%29</ActiveDebugProfile>
+    <DefaultDevice>Windows Subsystem for Android</DefaultDevice>
   </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/XamarinFormSample/XamarinFormSample.iOS/Entitlements.plist b/XamarinFormSample/XamarinFormSample.iOS/Entitlements.plist
index 7affdcb..06eb299 100644
--- a/XamarinFormSample/XamarinFormSample.iOS/Entitlements.plist
+++ b/XamarinFormSample/XamarinFormSample.iOS/Entitlements.plist
@@ -4,7 +4,7 @@
 <dict>
 	<key>keychain-access-groups</key>
 	<array>
-		<string>com.authgear.exampleapp.xamarin</string>
+		<string>com.authgear.migrate.tool.xamarin.flutter.sample</string>
 	</array>
 </dict>
 </plist>
diff --git a/XamarinFormSample/XamarinFormSample.iOS/Info.plist b/XamarinFormSample/XamarinFormSample.iOS/Info.plist
index e28eba7..0db4c71 100644
--- a/XamarinFormSample/XamarinFormSample.iOS/Info.plist
+++ b/XamarinFormSample/XamarinFormSample.iOS/Info.plist
@@ -14,10 +14,10 @@
 			<key>CFBundleTypeRole</key>
 			<string>Editor</string>
 			<key>CFBundleURLName</key>
-			<string>com.authgear.exampleapp.xamarin://host/path</string>
+			<string>com.authgear.migrate.tool.xamarin.flutter.sample://host/path</string>
 			<key>CFBundleURLSchemes</key>
 			<array>
-				<string>com.authgear.exampleapp.xamarin</string>
+				<string>com.authgear.migrate.tool.xamarin.flutter.sample</string>
 			</array>
 		</dict>
 	</array>
diff --git a/flutter-example/android/app/build.gradle b/flutter-example/android/app/build.gradle
index 8b2c2bf..a7b61d5 100644
--- a/flutter-example/android/app/build.gradle
+++ b/flutter-example/android/app/build.gradle
@@ -43,7 +43,7 @@ android {
 
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
-        applicationId "com.authgear.exampleapp.flutter"
+        applicationId "com.authgear.migrate.tool.xamarin.flutter.sample"
         // minSdkVersion flutter.minSdkVersion
         // 21 is required to use androidx.security
         minSdkVersion 21
@@ -53,11 +53,20 @@ android {
     }
 
     signingConfigs {
+        def file = rootProject.file("keystore-main.properties")
+        def props = new Properties()
+        props.load(new FileInputStream(file))
+        debug {
+            storeFile new File(file.parent, props['storeFile'])
+            keyAlias props['keyAlias']
+            storePassword props['storePassword']
+            keyPassword props['keyPassword']
+        }
         release {
-            storeFile file("keystore.jks")
-            storePassword project.ext.has("STORE_PASSWORD") ? project.ext["STORE_PASSWORD"] : ""
-            keyAlias project.ext.has("KEY_ALIAS") ? project.ext["KEY_ALIAS"] : ""
-            keyPassword project.ext.has("KEY_PASSWORD") ? project.ext["KEY_PASSWORD"] : ""
+            storeFile new File(file.parent, props['storeFile'])
+            keyAlias props['keyAlias']
+            storePassword props['storePassword']
+            keyPassword props['keyPassword']
         }
     }
 
diff --git a/flutter-example/android/app/src/main/AndroidManifest.xml b/flutter-example/android/app/src/main/AndroidManifest.xml
index b932a1f..1a4eb37 100644
--- a/flutter-example/android/app/src/main/AndroidManifest.xml
+++ b/flutter-example/android/app/src/main/AndroidManifest.xml
@@ -6,7 +6,7 @@
         android:allowBackup="true"
         android:fullBackupContent="@xml/full_backup_content"
         android:dataExtractionRules="@xml/data_extraction_rules"
-        android:label="Authgear Flutter"
+        android:label="Authgear Migrate Tool XamarinToFlutter Flutter"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity
diff --git a/flutter-example/android/keystore-main.properties b/flutter-example/android/keystore-main.properties
new file mode 100644
index 0000000..7ff11f0
--- /dev/null
+++ b/flutter-example/android/keystore-main.properties
@@ -0,0 +1,4 @@
+storeFile=../../keystore-main.jks
+keyAlias=main
+storePassword=Abcd1234!
+keyPassword=Abcd1234!
diff --git a/keystore-main.jks b/keystore-main.jks
new file mode 100644
index 0000000..a6f15c3
Binary files /dev/null and b/keystore-main.jks differ