diff --git a/sample apps/one_to_one_callkit/.gitignore b/sample apps/one_to_one_callkit/.gitignore
new file mode 100644
index 000000000..db823eea7
--- /dev/null
+++ b/sample apps/one_to_one_callkit/.gitignore
@@ -0,0 +1,53 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release
+/android/app/google-services.json
+
+# ios files
+/ios/Runner/GoogleService-Info.plist
+
+# firebase files
+lib/firebase_options.dart
+.firebaserc
+/ios/firebase_app_id_file.json
\ No newline at end of file
diff --git a/sample apps/one_to_one_callkit/.metadata b/sample apps/one_to_one_callkit/.metadata
new file mode 100644
index 000000000..8e2946d54
--- /dev/null
+++ b/sample apps/one_to_one_callkit/.metadata
@@ -0,0 +1,45 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+ revision: "12fccda598477eddd19f93040a1dba24f915b9be"
+ channel: "stable"
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+ platforms:
+ - platform: root
+ create_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ base_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ - platform: android
+ create_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ base_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ - platform: ios
+ create_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ base_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ - platform: linux
+ create_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ base_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ - platform: macos
+ create_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ base_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ - platform: web
+ create_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ base_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ - platform: windows
+ create_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+ base_revision: 12fccda598477eddd19f93040a1dba24f915b9be
+
+ # User provided section
+
+ # List of Local paths (relative to this file) that should be
+ # ignored by the migrate tool.
+ #
+ # Files that are not part of the templates will be ignored by default.
+ unmanaged_files:
+ - 'lib/main.dart'
+ - 'ios/Runner.xcodeproj/project.pbxproj'
diff --git a/sample apps/one_to_one_callkit/README.md b/sample apps/one_to_one_callkit/README.md
new file mode 100644
index 000000000..5087a55f3
--- /dev/null
+++ b/sample apps/one_to_one_callkit/README.md
@@ -0,0 +1,87 @@
+# Flutter One To One Audio/Video Calling Application
+
+
+
+Welcome to our One-to-One Audio-Video Calling Flutter app named Blitz 100ms.
+
+
+This application leverages the open source `hms_room_kit` package for efficient audio/video calls, integrates with CallKit for seamless Android/iOS call functionalities, and utilizes Firebase for push notifications.
+
+## Features
+Audio and video calling using `hms_room_kit`.
+CallKit integration for iOS to handle audio/video calls natively.
+Firebase notifications to alert users of incoming calls, even when the app is in the background.
+
+## Getting Started
+
+### Installation
+
+1. Clone the repository
+
+```bash
+git clone https://github.com/100mslive/100ms-flutter.git
+```
+
+2. Navigate to the project directory
+
+```bash
+cd 100ms-flutter/sample apps/one_to_one_callkit
+```
+
+3. Install dependencies
+
+```bash
+flutter pub get
+```
+
+> Note 🔑: The app utilizes the `callkit-ui` branch from the `hms_room_kit` repository instead of the published package to integrate a customized calling interface.
+
+4. Set up Firebase for Push Notifications, Google Sign-in, and Cloud functions. Add `GoogleService-Info.plist` to the `ios/Runner` directory and `google-services.json` to `android/app` directory.
+
+5. Create a 100ms account, and setup below templates:
+
+ - Audio Room Template
+ - Video Room Template
+
+ In the above templates, ensure two roles are `speaker` and `listener` with permissions to `publish` and `subscribe` to each other. Also, ensure both roles have `end room` and `room state` permissions.
+
+| Listener | Speaker |
+|----------|---------|
+| 
| 
|
+
+For room state permissions enable the room state from `Advanced Settings`
+
+
+
+
+
+6. Add the following fields in the below files:
+
+ - Update `CFBundleURLSchemes` in `Info.plist` with your client ID from `GoogleService-Info.plist`
+ - Update management token from 100ms dashboard, `Developer section` in `functions/index.js`
+ - Add Audio and video template IDs in `createRoom` method in `lib/services/app_utilities.dart`
+ - Add authentication client id in `loginUser` method from `GoogleService-Info.plist` file in `lib/services/app_utilities.dart`
+
+7. Deploy cloud functions
+
+```bash
+firebase deploy --only functions
+```
+
+That's it! You're ready to run the application.
+
+### Running the application
+
+```bash
+flutter run
+```
+
+## Usage
+
+Upon launching the app, users can initiate audio or video calls to other users through the interface provided by hms_room_kit.
+
+Incoming calls will trigger Firebase notifications, prompting the receiver to accept or decline the call.
+
+On iOS devices, CallKit integration ensures that the call UI is consistent with the native call experience.
+
+///Add video here
diff --git a/sample apps/one_to_one_callkit/analysis_options.yaml b/sample apps/one_to_one_callkit/analysis_options.yaml
new file mode 100644
index 000000000..0d2902135
--- /dev/null
+++ b/sample apps/one_to_one_callkit/analysis_options.yaml
@@ -0,0 +1,28 @@
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+ # The lint rules applied to this project can be customized in the
+ # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+ # included above or to enable additional rules. A list of all available lints
+ # and their documentation is published at https://dart.dev/lints.
+ #
+ # Instead of disabling a lint rule for the entire project in the
+ # section below, it can also be suppressed for a single line of code
+ # or a specific dart file by using the `// ignore: name_of_lint` and
+ # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+ # producing the lint.
+ rules:
+ # avoid_print: false # Uncomment to disable the `avoid_print` rule
+ # prefer_single_quotes: true # Uncomment to enable the `prefer_single_quotes` rule
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options
diff --git a/sample apps/one_to_one_callkit/android/.gitignore b/sample apps/one_to_one_callkit/android/.gitignore
new file mode 100644
index 000000000..6f568019d
--- /dev/null
+++ b/sample apps/one_to_one_callkit/android/.gitignore
@@ -0,0 +1,13 @@
+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+key.properties
+**/*.keystore
+**/*.jks
diff --git a/sample apps/one_to_one_callkit/android/app/build.gradle b/sample apps/one_to_one_callkit/android/app/build.gradle
new file mode 100644
index 000000000..ae8bfe9c8
--- /dev/null
+++ b/sample apps/one_to_one_callkit/android/app/build.gradle
@@ -0,0 +1,72 @@
+plugins {
+ id "com.android.application"
+ id "kotlin-android"
+ id "dev.flutter.flutter-gradle-plugin"
+ id("com.google.gms.google-services")
+}
+
+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+ localPropertiesFile.withReader('UTF-8') { reader ->
+ localProperties.load(reader)
+ }
+}
+
+def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+if (flutterVersionCode == null) {
+ flutterVersionCode = '1'
+}
+
+def flutterVersionName = localProperties.getProperty('flutter.versionName')
+if (flutterVersionName == null) {
+ flutterVersionName = '1.0'
+}
+
+android {
+ namespace "com.example.one_to_one_callkit"
+ compileSdkVersion 33
+
+ compileOptions {
+ sourceCompatibility JavaVersion.VERSION_1_8
+ targetCompatibility JavaVersion.VERSION_1_8
+ }
+
+ kotlinOptions {
+ jvmTarget = '1.8'
+ }
+
+ sourceSets {
+ main.java.srcDirs += 'src/main/kotlin'
+ }
+
+ defaultConfig {
+ // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+ applicationId "com.example.one_to_one_callkit"
+ // You can update the following values to match your application needs.
+ // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
+ minSdkVersion 21
+ targetSdkVersion 33
+ versionCode 4
+ versionName "1.0.4"
+ multiDexEnabled true
+ }
+
+ buildTypes {
+ release {
+ // TODO: Add your own signing config for the release build.
+ // Signing with the debug keys for now, so `flutter run --release` works.
+ signingConfig signingConfigs.debug
+ }
+ }
+}
+
+flutter {
+ source '../..'
+}
+
+dependencies {
+ implementation(platform("com.google.firebase:firebase-bom:32.7.3"))
+ implementation("com.google.firebase:firebase-messaging")
+ implementation 'com.android.support:multidex:1.0.3'
+}
diff --git a/sample apps/one_to_one_callkit/android/app/proguard-rules.pro b/sample apps/one_to_one_callkit/android/app/proguard-rules.pro
new file mode 100644
index 000000000..f283f5d73
--- /dev/null
+++ b/sample apps/one_to_one_callkit/android/app/proguard-rules.pro
@@ -0,0 +1 @@
+-keep class com.hiennv.flutter_callkit_incoming.** { *; }
\ No newline at end of file
diff --git a/sample apps/one_to_one_callkit/android/app/src/debug/AndroidManifest.xml b/sample apps/one_to_one_callkit/android/app/src/debug/AndroidManifest.xml
new file mode 100644
index 000000000..399f6981d
--- /dev/null
+++ b/sample apps/one_to_one_callkit/android/app/src/debug/AndroidManifest.xml
@@ -0,0 +1,7 @@
+
+
+
+
diff --git a/sample apps/one_to_one_callkit/android/app/src/main/AndroidManifest.xml b/sample apps/one_to_one_callkit/android/app/src/main/AndroidManifest.xml
new file mode 100644
index 000000000..e84ef9636
--- /dev/null
+++ b/sample apps/one_to_one_callkit/android/app/src/main/AndroidManifest.xml
@@ -0,0 +1,36 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/sample apps/one_to_one_callkit/android/app/src/main/kotlin/com/example/one_to_one_callkit/MainActivity.kt b/sample apps/one_to_one_callkit/android/app/src/main/kotlin/com/example/one_to_one_callkit/MainActivity.kt
new file mode 100644
index 000000000..10fb4d043
--- /dev/null
+++ b/sample apps/one_to_one_callkit/android/app/src/main/kotlin/com/example/one_to_one_callkit/MainActivity.kt
@@ -0,0 +1,18 @@
+package com.example.one_to_one_callkit
+
+import io.flutter.embedding.android.FlutterActivity
+import android.content.Intent
+import live.hms.hmssdk_flutter.Constants
+import android.app.Activity
+
+class MainActivity: FlutterActivity() {
+
+ override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+ super.onActivityResult(requestCode, resultCode, data)
+
+ if (requestCode == Constants.SCREEN_SHARE_INTENT_REQUEST_CODE && resultCode == Activity.RESULT_OK) {
+ data?.action = Constants.HMSSDK_RECEIVER
+ activity.sendBroadcast(data?.putExtra(Constants.METHOD_CALL, Constants.SCREEN_SHARE_REQUEST))
+ }
+ }
+}
diff --git a/sample apps/one_to_one_callkit/android/app/src/main/res/drawable-v21/launch_background.xml b/sample apps/one_to_one_callkit/android/app/src/main/res/drawable-v21/launch_background.xml
new file mode 100644
index 000000000..f74085f3f
--- /dev/null
+++ b/sample apps/one_to_one_callkit/android/app/src/main/res/drawable-v21/launch_background.xml
@@ -0,0 +1,12 @@
+
+
+
+