diff --git a/app/build.gradle.kts b/app/build.gradle.kts
new file mode 100644
index 0000000..00288e2
--- /dev/null
+++ b/app/build.gradle.kts
@@ -0,0 +1,48 @@
+plugins {
+    id("com.android.application")
+    id("org.jetbrains.kotlin.android")
+}
+
+android {
+    namespace = "cz.c3c.webviewkiosk"
+    compileSdk = 34
+
+    defaultConfig {
+        applicationId = "cz.c3c.webviewkiosk"
+        minSdk = 26 // Sony KD-65XE9305 final firmware = Android 8.0
+        targetSdk = 34
+        versionCode = 1 // bump on every release; adb install -r refuses downgrades
+        versionName = "0.1.0"
+    }
+
+    signingConfigs {
+        create("release") {
+            // Keystore is committed (private repo, LAN kiosk app) so every
+            // machine/CI produces the same signature and `adb install -r`
+            // upgrades work without uninstalling. Created in Task 6.
+            storeFile = rootProject.file("signing/release.keystore")
+            storePassword = "android-webview-kiosk"
+            keyAlias = "kiosk"
+            keyPassword = "android-webview-kiosk"
+        }
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            signingConfig = signingConfigs.getByName("release")
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+}
+
+dependencies {
+    testImplementation("junit:junit:4.13.2")
+}
diff --git a/build.gradle.kts b/build.gradle.kts
new file mode 100644
index 0000000..c7ad754
--- /dev/null
+++ b/build.gradle.kts
@@ -0,0 +1,4 @@
+plugins {
+    id("com.android.application") version "8.7.3" apply false
+    id("org.jetbrains.kotlin.android") version "2.0.21" apply false
+}
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 0000000..660848f
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1,2 @@
+org.gradle.jvmargs=-Xmx2g
+android.useAndroidX=true
diff --git a/settings.gradle.kts b/settings.gradle.kts
new file mode 100644
index 0000000..77769c8
--- /dev/null
+++ b/settings.gradle.kts
@@ -0,0 +1,17 @@
+pluginManagement {
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+dependencyResolutionManagement {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "android-webview-kiosk"
+include(":app")