diff --git a/admob/app/build.gradle b/admob/app/build.gradle
index 31978c13a3..823250b0ad 100644
--- a/admob/app/build.gradle
+++ b/admob/app/build.gradle
@@ -7,17 +7,20 @@ plugins {
 check.dependsOn 'assembleDebugAndroidTest'
 
 android {
-    compileSdkVersion 33
+    compileSdk 33
 
     defaultConfig {
         applicationId "com.google.samples.quickstart.admobexample"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
         multiDexEnabled true
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        vectorDrawables {
+            useSupportLibrary true
+        }
     }
 
     buildTypes {
@@ -35,6 +38,17 @@ android {
 
     buildFeatures {
         viewBinding = true
+        compose true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
     }
 }
 
@@ -46,6 +60,7 @@ dependencies {
     implementation 'androidx.browser:browser:1.0.0'
     implementation 'androidx.navigation:navigation-fragment-ktx:2.5.2'
     implementation 'androidx.navigation:navigation-ui-ktx:2.5.2'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
 
     implementation 'com.google.android.gms:play-services-ads:21.2.0'
 
@@ -56,9 +71,18 @@ dependencies {
     // for Google Analytics. This is recommended, but not required.
     implementation 'com.google.firebase:firebase-analytics'
 
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+
     debugImplementation "androidx.fragment:fragment-testing:1.5.2"
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'androidx.test:rules:1.4.0'
     androidTestImplementation 'androidx.test:runner:1.4.0'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 }
diff --git a/analytics/app/build.gradle b/analytics/app/build.gradle
index 15ac986a2e..d8d62acd1b 100644
--- a/analytics/app/build.gradle
+++ b/analytics/app/build.gradle
@@ -7,16 +7,19 @@ plugins {
 check.dependsOn 'assembleDebugAndroidTest'
 
 android {
-    compileSdkVersion 33
+    compileSdk 33
 
     defaultConfig {
         applicationId "com.google.firebase.quickstart.analytics"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
         multiDexEnabled true
+        vectorDrawables {
+            useSupportLibrary true
+        }
     }
 
     buildTypes {
@@ -28,6 +31,22 @@ android {
 
     buildFeatures {
         viewBinding = true
+        compose true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
     }
 }
 
@@ -40,6 +59,7 @@ dependencies {
     implementation "androidx.preference:preference-ktx:1.2.0"
     // Needed to override the version used by preference-ktx
     implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1"
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
 
     // Import the Firebase BoM (see: https://firebase.google.com/docs/android/learn-more#bom)
     implementation platform('com.google.firebase:firebase-bom:30.4.1')
@@ -50,8 +70,17 @@ dependencies {
     // Firebase Analytics (Kotlin)
     implementation 'com.google.firebase:firebase-analytics-ktx'
 
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
+
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'androidx.test:rules:1.4.0'
     androidTestImplementation 'androidx.test:runner:1.4.0'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 }
diff --git a/appdistribution/app/build.gradle b/appdistribution/app/build.gradle
index c28f92a1ff..51efaeabf0 100644
--- a/appdistribution/app/build.gradle
+++ b/appdistribution/app/build.gradle
@@ -5,15 +5,18 @@ plugins {
 }
 
 android {
-    compileSdkVersion 33
+    compileSdk 33
     defaultConfig {
         applicationId "com.google.firebase.appdistributionquickstart"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
 
         multiDexEnabled true
+        vectorDrawables {
+            useSupportLibrary true
+        }
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
@@ -27,6 +30,22 @@ android {
 
     buildFeatures {
         viewBinding = true
+        compose true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
     }
     lint {
         warning 'InvalidPackage'
@@ -40,6 +59,7 @@ dependencies {
     implementation 'com.google.android.material:material:1.6.1'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
     implementation 'androidx.multidex:multidex:2.0.1'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
 
     // Import the Firebase BoM (see: https://firebase.google.com/docs/android/learn-more#bom)
     implementation platform('com.google.firebase:firebase-bom:30.4.1')
@@ -51,8 +71,17 @@ dependencies {
     // for Google Analytics. This is recommended, but not required.
     implementation 'com.google.firebase:firebase-analytics'
 
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
+
     androidTestImplementation 'androidx.test:runner:1.4.0'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'androidx.test:rules:1.4.0'
     androidTestImplementation 'androidx.test.uiautomator:uiautomator:2.2.0'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 }
diff --git a/auth/app/build.gradle b/auth/app/build.gradle
index 118af27676..676ccdb3ae 100644
--- a/auth/app/build.gradle
+++ b/auth/app/build.gradle
@@ -12,11 +12,14 @@ android {
 
     defaultConfig {
         applicationId "com.google.firebase.quickstart.auth"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
         multiDexEnabled true
+        vectorDrawables {
+            useSupportLibrary true
+        }
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
 
@@ -27,13 +30,24 @@ android {
         }
     }
 
-    compileOptions {
-        sourceCompatibility 1.8
-        targetCompatibility 1.8
-    }
-
     buildFeatures {
         viewBinding = true
+        compose true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
     }
 }
 
@@ -48,6 +62,14 @@ dependencies {
     implementation 'com.google.android.material:material:1.6.1'
     implementation 'androidx.navigation:navigation-fragment-ktx:2.5.2'
     implementation 'androidx.navigation:navigation-ui-ktx:2.5.2'
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1"
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
+
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
 
     // Import the Firebase BoM (see: https://firebase.google.com/docs/android/learn-more#bom)
     implementation platform('com.google.firebase:firebase-bom:30.4.1')
@@ -73,4 +95,7 @@ dependencies {
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'androidx.test:rules:1.4.0'
     androidTestImplementation 'androidx.test:runner:1.4.0'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 }
diff --git a/build.gradle b/build.gradle
index 140a2c37c5..687f6de113 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,4 +1,7 @@
 buildscript {
+    ext {
+        compose_version = '1.2.1'
+    }
     repositories {
         google()
         mavenCentral()
diff --git a/crash/app/build.gradle b/crash/app/build.gradle
index e466ec4e42..cc37ea276e 100644
--- a/crash/app/build.gradle
+++ b/crash/app/build.gradle
@@ -8,14 +8,17 @@ plugins {
 check.dependsOn 'assembleDebugAndroidTest'
 
 android {
-    compileSdkVersion 33
+    compileSdk 33
 
     defaultConfig {
         applicationId "com.google.samples.quickstart.crash"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
+        vectorDrawables {
+            useSupportLibrary true
+        }
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
 
@@ -33,6 +36,22 @@ android {
 
     buildFeatures {
         viewBinding = true
+        compose true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
     }
 }
 
@@ -41,6 +60,8 @@ dependencies {
     implementation project(":internal:chooserx")
     implementation 'com.google.android.material:material:1.6.1'
     implementation "androidx.activity:activity-ktx:1.5.1"
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1"
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
 
     // Import the Firebase BoM (see: https://firebase.google.com/docs/android/learn-more#bom)
     implementation platform('com.google.firebase:firebase-bom:30.4.1')
@@ -55,9 +76,18 @@ dependencies {
     // For use in the CustomKeySamples -- for testing Google Api Availability.
     implementation 'com.google.android.gms:play-services-base:18.1.0'
 
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
+
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'androidx.test:rules:1.4.0'
     androidTestImplementation 'androidx.test:runner:1.4.0'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 }
diff --git a/database/app/build.gradle b/database/app/build.gradle
index 67c29b2e82..9c1b5ef28d 100644
--- a/database/app/build.gradle
+++ b/database/app/build.gradle
@@ -7,15 +7,18 @@ plugins {
 check.dependsOn 'assembleDebugAndroidTest'
 
 android {
-    compileSdkVersion 33
+    compileSdk 33
 
     defaultConfig {
         applicationId "com.google.firebase.quickstart.database"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
         multiDexEnabled true
+        vectorDrawables {
+            useSupportLibrary true
+        }
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
 
@@ -29,6 +32,22 @@ android {
 
     buildFeatures {
         viewBinding = true
+        compose true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
     }
 }
 
@@ -41,6 +60,8 @@ dependencies {
     implementation 'com.google.android.material:material:1.6.1'
     implementation 'androidx.navigation:navigation-fragment-ktx:2.5.2'
     implementation 'androidx.navigation:navigation-ui-ktx:2.5.2'
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1"
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
 
     // Import the Firebase BoM (see: https://firebase.google.com/docs/android/learn-more#bom)
     implementation platform('com.google.firebase:firebase-bom:30.4.1')
@@ -59,6 +80,12 @@ dependencies {
 
     implementation 'com.firebaseui:firebase-ui-database:8.0.1'
 
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
+
     // Needed to fix a dependency conflict with FirebaseUI'
     implementation 'androidx.arch.core:core-runtime:2.1.0'
 
@@ -66,4 +93,7 @@ dependencies {
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'androidx.test:rules:1.4.0'
     androidTestImplementation 'androidx.test:runner:1.4.0'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 }
diff --git a/dynamiclinks/app/build.gradle b/dynamiclinks/app/build.gradle
index 9e7804af81..7b7b3bf268 100644
--- a/dynamiclinks/app/build.gradle
+++ b/dynamiclinks/app/build.gradle
@@ -7,16 +7,19 @@ plugins {
 check.dependsOn 'assembleMainFlavorDebugAndroidTest'
 
 android {
-    compileSdkVersion 33
+    compileSdk 33
     flavorDimensions "irrelevant"
 
     defaultConfig {
         applicationId "com.google.firebase.quickstart.deeplinks"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
-
+        multiDexEnabled true
+        vectorDrawables {
+            useSupportLibrary true
+        }
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
@@ -41,6 +44,22 @@ android {
 
     buildFeatures {
         viewBinding = true
+        compose = true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
     }
 }
 
@@ -49,6 +68,7 @@ dependencies {
     implementation project(":internal:chooserx")
 
     implementation 'com.google.android.material:material:1.6.1'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
 
     // Import the Firebase BoM (see: https://firebase.google.com/docs/android/learn-more#bom)
     implementation platform('com.google.firebase:firebase-bom:30.4.1')
@@ -63,8 +83,17 @@ dependencies {
     // for Google Analytics. This is recommended, but not required.
     implementation 'com.google.firebase:firebase-analytics'
 
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
+
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'androidx.test:rules:1.4.0'
     androidTestImplementation 'androidx.test:runner:1.4.0'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 }
diff --git a/firestore/app/build.gradle b/firestore/app/build.gradle
index e8599be4ae..b83c913a28 100644
--- a/firestore/app/build.gradle
+++ b/firestore/app/build.gradle
@@ -7,16 +7,18 @@ plugins {
 
 android {
     testBuildType "release"
-    compileSdkVersion 33
+    compileSdk 33
 
     defaultConfig {
         applicationId "com.google.firebase.example.fireeats"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
         multiDexEnabled true
-
+        vectorDrawables {
+            useSupportLibrary true
+        }
         vectorDrawables.useSupportLibrary true
 
         lintOptions {
@@ -36,6 +38,22 @@ android {
 
     buildFeatures {
         viewBinding = true
+        compose = true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
     }
 }
 
@@ -83,6 +101,12 @@ dependencies {
     implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
     annotationProcessor 'androidx.lifecycle:lifecycle-compiler:2.5.1'
 
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
+
     // Third-party libraries
     implementation 'me.zhanghai.android.materialratingbar:library:1.4.0'
     implementation 'com.github.bumptech.glide:glide:4.12.0'
@@ -95,5 +119,8 @@ dependencies {
     androidTestImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'org.hamcrest:hamcrest-library:2.2'
     androidTestImplementation 'com.google.firebase:firebase-auth'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 
 }
diff --git a/functions/app/build.gradle b/functions/app/build.gradle
index e4128ae0b4..73dec1bfe6 100644
--- a/functions/app/build.gradle
+++ b/functions/app/build.gradle
@@ -7,15 +7,18 @@ plugins {
 android {
     // Changes the test build type for instrumented tests to "stage".
     testBuildType "release"
-    compileSdkVersion 33
+    compileSdk 33
 
     defaultConfig {
         applicationId "com.google.samples.quickstart.functions"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
         multiDexEnabled true
+        vectorDrawables {
+            useSupportLibrary true
+        }
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
 
@@ -30,6 +33,22 @@ android {
 
     buildFeatures {
         viewBinding = true
+        compose = true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
     }
 }
 
@@ -41,6 +60,7 @@ dependencies {
     implementation 'androidx.fragment:fragment-ktx:1.5.2'
     implementation 'androidx.appcompat:appcompat:1.5.1'
     implementation 'com.google.android.material:material:1.6.1'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
 
     // Import the Firebase BoM (see: https://firebase.google.com/docs/android/learn-more#bom)
     implementation platform('com.google.firebase:firebase-bom:30.4.1')
@@ -66,9 +86,18 @@ dependencies {
     // Google Play services
     implementation 'com.google.android.gms:play-services-auth:20.3.0'
 
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
+
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'androidx.test:rules:1.4.0'
     androidTestImplementation 'androidx.test:runner:1.4.0'
     androidTestImplementation 'androidx.test.uiautomator:uiautomator:2.2.0'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 }
diff --git a/inappmessaging/app/build.gradle b/inappmessaging/app/build.gradle
index d9df028a08..763f07360c 100644
--- a/inappmessaging/app/build.gradle
+++ b/inappmessaging/app/build.gradle
@@ -5,15 +5,18 @@ plugins {
 }
 
 android {
-    compileSdkVersion 33
+    compileSdk 33
     defaultConfig {
         applicationId "com.google.firebase.fiamquickstart"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
 
         multiDexEnabled true
+        vectorDrawables {
+            useSupportLibrary true
+        }
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
@@ -27,6 +30,22 @@ android {
 
     buildFeatures {
         viewBinding = true
+        compose = true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
     }
     lint {
         warning 'InvalidPackage'
@@ -40,6 +59,7 @@ dependencies {
     implementation 'com.google.android.material:material:1.6.1'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
     implementation 'androidx.multidex:multidex:2.0.1'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
 
     // Import the Firebase BoM (see: https://firebase.google.com/docs/android/learn-more#bom)
     implementation platform('com.google.firebase:firebase-bom:30.4.1')
@@ -59,8 +79,17 @@ dependencies {
 
     implementation 'com.google.firebase:firebase-installations-ktx:17.0.2'
 
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
+
     androidTestImplementation 'androidx.test:runner:1.4.0'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'androidx.test:rules:1.4.0'
     androidTestImplementation 'androidx.test.uiautomator:uiautomator:2.2.0'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 }
diff --git a/messaging/app/build.gradle b/messaging/app/build.gradle
index 67e7f41421..f3c8323b94 100644
--- a/messaging/app/build.gradle
+++ b/messaging/app/build.gradle
@@ -7,16 +7,18 @@ plugins {
 check.dependsOn 'assembleDebugAndroidTest'
 
 android {
-    compileSdkVersion 33
+    compileSdk 33
 
     defaultConfig {
         applicationId "com.google.firebase.quickstart.fcm"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
         multiDexEnabled true
-
+        vectorDrawables {
+            useSupportLibrary true
+        }
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
@@ -35,6 +37,22 @@ android {
 
     buildFeatures {
         viewBinding = true
+        compose = true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
     }
     lint {
         abortOnError false
@@ -51,6 +69,7 @@ dependencies {
     // Required when asking for permission to post notifications (starting in Android 13)
     implementation 'androidx.activity:activity-ktx:1.5.1'
     implementation 'androidx.fragment:fragment-ktx:1.5.2'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
 
     implementation 'com.google.android.material:material:1.6.1'
 
@@ -71,9 +90,18 @@ dependencies {
 
     implementation 'androidx.work:work-runtime:2.7.1'
 
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
+
     // Testing dependencies
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'androidx.test:runner:1.4.0'
     androidTestImplementation 'androidx.test:rules:1.4.0'
     androidTestImplementation 'androidx.annotation:annotation:1.4.0'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 }
diff --git a/perf/app/build.gradle b/perf/app/build.gradle
index ec843ccb94..c02b6a5307 100644
--- a/perf/app/build.gradle
+++ b/perf/app/build.gradle
@@ -8,14 +8,17 @@ plugins {
 check.dependsOn 'assembleDebugAndroidTest'
 
 android {
-    compileSdkVersion 33
+    compileSdk 33
     defaultConfig {
         applicationId "com.google.firebase.quickstart.perfmon"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
         multiDexEnabled true
+        vectorDrawables {
+            useSupportLibrary true
+        }
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
@@ -34,6 +37,22 @@ android {
     }
     buildFeatures {
         viewBinding = true
+        compose = true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
     }
 }
 
@@ -56,6 +75,15 @@ dependencies {
 
     implementation 'com.github.bumptech.glide:glide:4.12.0'
 
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
+
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 }
diff --git a/storage/app/build.gradle b/storage/app/build.gradle
index b09a0fe902..624a880272 100644
--- a/storage/app/build.gradle
+++ b/storage/app/build.gradle
@@ -7,15 +7,18 @@ plugins {
 check.dependsOn 'assembleDebugAndroidTest'
 
 android {
-    compileSdkVersion 33
+    compileSdk 33
 
     defaultConfig {
         applicationId "com.google.firebase.quickstart.firebasestorage"
-        minSdkVersion 19
-        targetSdkVersion 33
+        minSdk 21 // minSdk would be 19 without compose
+        targetSdk 33
         versionCode 1
         versionName "1.0"
         multiDexEnabled true
+        vectorDrawables {
+            useSupportLibrary true
+        }
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
 
@@ -28,6 +31,22 @@ android {
 
     buildFeatures {
         viewBinding = true
+        compose = true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.0'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
     }
 }
 
@@ -50,11 +69,21 @@ dependencies {
     // Firebase Authentication (Kotlin)
     implementation 'com.google.firebase:firebase-auth-ktx'
 
+    // Jetpack Compose
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    implementation 'androidx.activity:activity-compose:1.5.1'
+
     implementation 'androidx.activity:activity-ktx:1.5.1'
     implementation 'androidx.appcompat:appcompat:1.5.1'
     implementation 'com.google.android.material:material:1.6.1'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.5.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
     androidTestImplementation 'androidx.test.espresso:espresso-intents:3.4.0'
     androidTestImplementation 'androidx.test:rules:1.4.0'
     androidTestImplementation 'androidx.test:runner:1.4.0'
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version"
 }