diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..ef556b1
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,28 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.{kt,kts}]
+ij_kotlin_allow_trailing_comma = true
+ij_kotlin_allow_trailing_comma_on_call_site = true
+ij_kotlin_imports_layout = *,java.**,javax.**,kotlin.**,^
+ij_kotlin_line_break_after_multiline_when_entry = true
+ij_kotlin_packages_to_use_import_on_demand = unset
+ktlint_argument_list_wrapping_ignore_when_parameter_count_greater_or_equal_than = unset
+ktlint_chain_method_rule_force_multiline_when_chain_operator_count_greater_or_equal_than = unset
+ktlint_class_signature_rule_force_multiline_when_parameter_count_greater_or_equal_than = 1
+ktlint_code_style = ktlint_official
+ktlint_function_naming_ignore_when_annotated_with = Composable
+ktlint_function_signature_body_expression_wrapping = multiline
+ktlint_function_signature_rule_force_multiline_when_parameter_count_greater_or_equal_than = 2
+ktlint_ignore_back_ticked_identifier = false
+max_line_length = 140
diff --git a/.github/workflows/pr-checks.yml b/.github/workflows/pr-checks.yml
index 0376d22..8bbaa81 100644
--- a/.github/workflows/pr-checks.yml
+++ b/.github/workflows/pr-checks.yml
@@ -41,5 +41,9 @@ jobs:
           mise settings set experimental true
           mise install --verbose
           mise list --verbose
+      - name: 🤔 Evaluate Variables
+        run: just vars
       - name: 🚨 Lint
         run: just lint
+      - name: 🏗️ Build
+        run: just build
diff --git a/.mise.toml b/.mise.toml
index e72bbcf..efa29f1 100644
--- a/.mise.toml
+++ b/.mise.toml
@@ -4,7 +4,8 @@
 #
 
 [tools]
-just = "1.24.0"
+just = "1.25.2"
+ktlint = "1.2.1"
 
 [settings]
 experimental = true
diff --git a/android/.gitignore b/android/.gitignore
new file mode 100644
index 0000000..aa724b7
--- /dev/null
+++ b/android/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/android/app/.gitignore b/android/app/.gitignore
new file mode 100644
index 0000000..42afabf
--- /dev/null
+++ b/android/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/android/app/build.gradle.kts b/android/app/build.gradle.kts
new file mode 100644
index 0000000..9b36b9d
--- /dev/null
+++ b/android/app/build.gradle.kts
@@ -0,0 +1,70 @@
+@Suppress("DSL_SCOPE_VIOLATION") // TODO: Remove once KTIJ-19369 is fixed
+plugins {
+    alias(libs.plugins.androidApplication)
+    alias(libs.plugins.kotlinAndroid)
+}
+
+android {
+    namespace = "at.phatbl.androidapp"
+    compileSdk = 34
+
+    defaultConfig {
+        applicationId = "at.phatbl.androidapp"
+        minSdk = 24
+        targetSdk = 34
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        vectorDrawables {
+            useSupportLibrary = true
+        }
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro",
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+    buildFeatures {
+        compose = true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion = "1.5.1"
+    }
+    packaging {
+        resources {
+            excludes += "/META-INF/{AL2.0,LGPL2.1}"
+        }
+    }
+}
+
+dependencies {
+
+    implementation(libs.core.ktx)
+    implementation(libs.lifecycle.runtime.ktx)
+    implementation(libs.activity.compose)
+    implementation(platform(libs.compose.bom))
+    implementation(libs.ui)
+    implementation(libs.ui.graphics)
+    implementation(libs.ui.tooling.preview)
+    implementation(libs.material3)
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.androidx.test.ext.junit)
+    androidTestImplementation(libs.espresso.core)
+    androidTestImplementation(platform(libs.compose.bom))
+    androidTestImplementation(libs.ui.test.junit4)
+    debugImplementation(libs.ui.tooling)
+    debugImplementation(libs.ui.test.manifest)
+}
diff --git a/android/app/proguard-rules.pro b/android/app/proguard-rules.pro
new file mode 100644
index 0000000..481bb43
--- /dev/null
+++ b/android/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/android/app/src/androidTest/java/at/phatbl/androidapp/ExampleInstrumentedTest.kt b/android/app/src/androidTest/java/at/phatbl/androidapp/ExampleInstrumentedTest.kt
new file mode 100644
index 0000000..05607c2
--- /dev/null
+++ b/android/app/src/androidTest/java/at/phatbl/androidapp/ExampleInstrumentedTest.kt
@@ -0,0 +1,22 @@
+package at.phatbl.androidapp
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("at.phatbl.androidapp", appContext.packageName)
+    }
+}
diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..d87bebb
--- /dev/null
+++ b/android/app/src/main/AndroidManifest.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.AndroidApplication"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:label="@string/app_name"
+            android:theme="@style/Theme.AndroidApplication">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
diff --git a/android/app/src/main/java/at/phatbl/androidapp/MainActivity.kt b/android/app/src/main/java/at/phatbl/androidapp/MainActivity.kt
new file mode 100644
index 0000000..566d569
--- /dev/null
+++ b/android/app/src/main/java/at/phatbl/androidapp/MainActivity.kt
@@ -0,0 +1,49 @@
+package at.phatbl.androidapp
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import at.phatbl.androidapp.ui.theme.AndroidApplicationTheme
+
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContent {
+            AndroidApplicationTheme {
+                // A surface container using the 'background' color from the theme
+                Surface(
+                    modifier = Modifier.fillMaxSize(),
+                    color = MaterialTheme.colorScheme.background,
+                ) {
+                    Greeting("Android")
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun Greeting(
+    name: String,
+    modifier: Modifier = Modifier,
+) {
+    Text(
+        text = "Hello $name!",
+        modifier = modifier,
+    )
+}
+
+@Preview(showBackground = true)
+@Composable
+fun GreetingPreview() {
+    AndroidApplicationTheme {
+        Greeting("Android")
+    }
+}
diff --git a/android/app/src/main/java/at/phatbl/androidapp/ui/theme/Color.kt b/android/app/src/main/java/at/phatbl/androidapp/ui/theme/Color.kt
new file mode 100644
index 0000000..b88f172
--- /dev/null
+++ b/android/app/src/main/java/at/phatbl/androidapp/ui/theme/Color.kt
@@ -0,0 +1,11 @@
+package at.phatbl.androidapp.ui.theme
+
+import androidx.compose.ui.graphics.Color
+
+val Purple80 = Color(0xFFD0BCFF)
+val PurpleGrey80 = Color(0xFFCCC2DC)
+val Pink80 = Color(0xFFEFB8C8)
+
+val Purple40 = Color(0xFF6650a4)
+val PurpleGrey40 = Color(0xFF625b71)
+val Pink40 = Color(0xFF7D5260)
diff --git a/android/app/src/main/java/at/phatbl/androidapp/ui/theme/Theme.kt b/android/app/src/main/java/at/phatbl/androidapp/ui/theme/Theme.kt
new file mode 100644
index 0000000..9cde6ea
--- /dev/null
+++ b/android/app/src/main/java/at/phatbl/androidapp/ui/theme/Theme.kt
@@ -0,0 +1,72 @@
+package at.phatbl.androidapp.ui.theme
+
+import android.app.Activity
+import android.os.Build
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.dynamicDarkColorScheme
+import androidx.compose.material3.dynamicLightColorScheme
+import androidx.compose.material3.lightColorScheme
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.SideEffect
+import androidx.compose.ui.graphics.toArgb
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalView
+import androidx.core.view.WindowCompat
+
+private val DarkColorScheme =
+    darkColorScheme(
+        primary = Purple80,
+        secondary = PurpleGrey80,
+        tertiary = Pink80,
+    )
+
+private val LightColorScheme =
+    lightColorScheme(
+        primary = Purple40,
+        secondary = PurpleGrey40,
+        tertiary = Pink40,
+    /* Other default colors to override
+    background = Color(0xFFFFFBFE),
+    surface = Color(0xFFFFFBFE),
+    onPrimary = Color.White,
+    onSecondary = Color.White,
+    onTertiary = Color.White,
+    onBackground = Color(0xFF1C1B1F),
+    onSurface = Color(0xFF1C1B1F),
+     */
+    )
+
+@Composable
+fun AndroidApplicationTheme(
+    darkTheme: Boolean = isSystemInDarkTheme(),
+    // Dynamic color is available on Android 12+
+    dynamicColor: Boolean = true,
+    content: @Composable () -> Unit,
+) {
+    val colorScheme =
+        when {
+            dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
+                val context = LocalContext.current
+                if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+            }
+
+            darkTheme -> DarkColorScheme
+            else -> LightColorScheme
+        }
+    val view = LocalView.current
+    if (!view.isInEditMode) {
+        SideEffect {
+            val window = (view.context as Activity).window
+            window.statusBarColor = colorScheme.primary.toArgb()
+            WindowCompat.getInsetsController(window, view).isAppearanceLightStatusBars = darkTheme
+        }
+    }
+
+    MaterialTheme(
+        colorScheme = colorScheme,
+        typography = Typography,
+        content = content,
+    )
+}
diff --git a/android/app/src/main/java/at/phatbl/androidapp/ui/theme/Type.kt b/android/app/src/main/java/at/phatbl/androidapp/ui/theme/Type.kt
new file mode 100644
index 0000000..0753a56
--- /dev/null
+++ b/android/app/src/main/java/at/phatbl/androidapp/ui/theme/Type.kt
@@ -0,0 +1,36 @@
+package at.phatbl.androidapp.ui.theme
+
+import androidx.compose.material3.Typography
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.sp
+
+// Set of Material typography styles to start with
+val Typography =
+    Typography(
+        bodyLarge =
+            TextStyle(
+                fontFamily = FontFamily.Default,
+                fontWeight = FontWeight.Normal,
+                fontSize = 16.sp,
+                lineHeight = 24.sp,
+                letterSpacing = 0.5.sp,
+            ),
+    /* Other default text styles to override
+    titleLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 22.sp,
+        lineHeight = 28.sp,
+        letterSpacing = 0.sp
+    ),
+    labelSmall = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Medium,
+        fontSize = 11.sp,
+        lineHeight = 16.sp,
+        letterSpacing = 0.5.sp
+    )
+     */
+    )
diff --git a/android/app/src/main/res/drawable/ic_launcher_background.xml b/android/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000..07d5da9
--- /dev/null
+++ b/android/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/android/app/src/main/res/drawable/ic_launcher_foreground.xml b/android/app/src/main/res/drawable/ic_launcher_foreground.xml
new file mode 100644
index 0000000..7706ab9
--- /dev/null
+++ b/android/app/src/main/res/drawable/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
diff --git a/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 0000000..b3e26b4
--- /dev/null
+++ b/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
diff --git a/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 0000000..b3e26b4
--- /dev/null
+++ b/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
diff --git a/android/app/src/main/res/mipmap-hdpi/ic_launcher.webp b/android/app/src/main/res/mipmap-hdpi/ic_launcher.webp
new file mode 100644
index 0000000..c209e78
Binary files /dev/null and b/android/app/src/main/res/mipmap-hdpi/ic_launcher.webp differ
diff --git a/android/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp b/android/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
new file mode 100644
index 0000000..b2dfe3d
Binary files /dev/null and b/android/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp differ
diff --git a/android/app/src/main/res/mipmap-mdpi/ic_launcher.webp b/android/app/src/main/res/mipmap-mdpi/ic_launcher.webp
new file mode 100644
index 0000000..4f0f1d6
Binary files /dev/null and b/android/app/src/main/res/mipmap-mdpi/ic_launcher.webp differ
diff --git a/android/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp b/android/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
new file mode 100644
index 0000000..62b611d
Binary files /dev/null and b/android/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp differ
diff --git a/android/app/src/main/res/mipmap-xhdpi/ic_launcher.webp b/android/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
new file mode 100644
index 0000000..948a307
Binary files /dev/null and b/android/app/src/main/res/mipmap-xhdpi/ic_launcher.webp differ
diff --git a/android/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp b/android/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
new file mode 100644
index 0000000..1b9a695
Binary files /dev/null and b/android/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp differ
diff --git a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
new file mode 100644
index 0000000..28d4b77
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp differ
diff --git a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
new file mode 100644
index 0000000..9287f50
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp differ
diff --git a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
new file mode 100644
index 0000000..aa7d642
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp differ
diff --git a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
new file mode 100644
index 0000000..9126ae3
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp differ
diff --git a/android/app/src/main/res/values/colors.xml b/android/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000..ca1931b
--- /dev/null
+++ b/android/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
diff --git a/android/app/src/main/res/values/strings.xml b/android/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000..3e49408
--- /dev/null
+++ b/android/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">Android Application</string>
+</resources>
\ No newline at end of file
diff --git a/android/app/src/main/res/values/themes.xml b/android/app/src/main/res/values/themes.xml
new file mode 100644
index 0000000..8c37637
--- /dev/null
+++ b/android/app/src/main/res/values/themes.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="Theme.AndroidApplication" parent="android:Theme.Material.Light.NoActionBar" />
+</resources>
diff --git a/android/app/src/main/res/xml/backup_rules.xml b/android/app/src/main/res/xml/backup_rules.xml
new file mode 100644
index 0000000..148c18b
--- /dev/null
+++ b/android/app/src/main/res/xml/backup_rules.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older that API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>
diff --git a/android/app/src/main/res/xml/data_extraction_rules.xml b/android/app/src/main/res/xml/data_extraction_rules.xml
new file mode 100644
index 0000000..0c4f95c
--- /dev/null
+++ b/android/app/src/main/res/xml/data_extraction_rules.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>
diff --git a/android/app/src/test/java/at/phatbl/androidapp/ExampleUnitTest.kt b/android/app/src/test/java/at/phatbl/androidapp/ExampleUnitTest.kt
new file mode 100644
index 0000000..68f9475
--- /dev/null
+++ b/android/app/src/test/java/at/phatbl/androidapp/ExampleUnitTest.kt
@@ -0,0 +1,16 @@
+package at.phatbl.androidapp
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}
diff --git a/android/build.gradle.kts b/android/build.gradle.kts
new file mode 100644
index 0000000..8718ac3
--- /dev/null
+++ b/android/build.gradle.kts
@@ -0,0 +1,13 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+@Suppress("DSL_SCOPE_VIOLATION") // TODO: Remove once KTIJ-19369 is fixed
+plugins {
+    alias(libs.plugins.androidApplication) apply false
+    alias(libs.plugins.kotlinAndroid) apply false
+}
+true // Needed to make the Suppress annotation work for the plugins block
+
+val wrapper: Task by tasks.getting {
+    this as Wrapper
+    gradleVersion = libs.versions.gradle.get()
+    distributionType = Wrapper.DistributionType.BIN
+}
diff --git a/android/gradle.properties b/android/gradle.properties
new file mode 100644
index 0000000..2cbd6d1
--- /dev/null
+++ b/android/gradle.properties
@@ -0,0 +1,23 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true
diff --git a/android/gradle/libs.versions.toml b/android/gradle/libs.versions.toml
new file mode 100644
index 0000000..ab3afc6
--- /dev/null
+++ b/android/gradle/libs.versions.toml
@@ -0,0 +1,31 @@
+[versions]
+activity-compose = "1.7.0"
+androidx-test-ext-junit = "1.1.5"
+agp = "8.2.2"
+core-ktx = "1.10.1"
+compose-bom = "2023.08.00"
+espresso-core = "3.5.1"
+gradle = "8.7"
+junit = "4.13.2"
+kotlin = "1.9.0"
+lifecycle-runtime-ktx = "2.6.1"
+
+[libraries]
+core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "core-ktx" }
+junit = { group = "junit", name = "junit", version.ref = "junit" }
+androidx-test-ext-junit = { group = "androidx.test.ext", name = "junit", version.ref = "androidx-test-ext-junit" }
+espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espresso-core" }
+lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycle-runtime-ktx" }
+activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activity-compose" }
+compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "compose-bom" }
+ui = { group = "androidx.compose.ui", name = "ui" }
+ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" }
+ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
+ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }
+ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
+ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
+material3 = { group = "androidx.compose.material3", name = "material3" }
+
+[plugins]
+androidApplication = { id = "com.android.application", version.ref = "agp" }
+kotlinAndroid = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
diff --git a/android/gradle/wrapper/gradle-wrapper.jar b/android/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..033e24c
Binary files /dev/null and b/android/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/android/gradle/wrapper/gradle-wrapper.properties b/android/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..b82aa23
--- /dev/null
+++ b/android/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/android/gradlew b/android/gradlew
new file mode 100755
index 0000000..fcb6fca
--- /dev/null
+++ b/android/gradlew
@@ -0,0 +1,248 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/android/justfile b/android/justfile
new file mode 100644
index 0000000..48ad4ab
--- /dev/null
+++ b/android/justfile
@@ -0,0 +1,22 @@
+#!/usr/bin/env -S just --justfile
+# ^ A shebang isn't required, but allows a justfile to be executed
+#   like a script, with `./justfile test`, for example.
+
+set shell := ["bash", "-euo", "pipefail", "-c"]
+
+# lists recipes (default)
+list:
+    @just --list
+
+# lint
+lint:
+    @ktlint --color --relative
+    @./gradlew lint
+
+# format
+format:
+    @ktlint --format --color --relative
+
+# build
+build:
+    @./gradlew assemble
diff --git a/android/settings.gradle.kts b/android/settings.gradle.kts
new file mode 100644
index 0000000..d0229d2
--- /dev/null
+++ b/android/settings.gradle.kts
@@ -0,0 +1,17 @@
+pluginManagement {
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "Android Application"
+include(":app")
diff --git a/justfile b/justfile
index 17f32a4..a19966a 100644
--- a/justfile
+++ b/justfile
@@ -1,11 +1,123 @@
 #!/usr/bin/env -S just --justfile
 # ^ A shebang isn't required, but allows a justfile to be executed
 #   like a script, with `./justfile test`, for example.
+# ---------------------------------------------------------------------------- #
+# just settings
+# https://just.systems/man/en/chapter_26.html#settings
+#
+# bash with options. Reuse in recipes with #!{{ bash }}
+
+bash := "/usr/bin/env bash -euo pipefail"
+
+# Command used to invoke recipes and evaluate backticks.
+# bash `-c` argument must be last.
+
+set shell := ["bash", "-euo", "pipefail", "-c"]
+
+# ---------------------------------------------------------------------------- #
+# project variables
+
+all-projects := `ls -d */`
+
+# ---------------------------------------------------------------------------- #
 
-# initial recipe
 default:
-    echo 'Hello, world!'
+    @just --choose
+
+# lists recipes
+list:
+    @just --list
+
+# show var values
+vars:
+    @just --evaluate
+
+# -----[ Lint ]-----------------------------------------------------------------
+
+# lint justfile
+[no-exit-message]
+_lint-just:
+    @just --unstable --fmt --check
+
+# lint a single project
+[no-exit-message]
+_lint-one project:
+    @just {{ project }}/lint
+
+# lints all projects
+[no-exit-message]
+_lint-all:
+    #!{{ bash }}
+    for project in {{ all-projects }}; do
+        echo Linting $project
+        just ${project}/lint
+    done
+
+# lint justfile and one or more projects (default: all)
+[no-exit-message]
+lint project='all':
+    #!{{ bash }}
+    if [[ {{ project }} == 'all' ]]; then
+        just _lint-all
+    elif [[ {{ project }} == 'just' ]]; then
+        just _lint-just
+    else
+        just _lint-one {{ project }}
+    fi
+
+# -----[ Format ]---------------------------------------------------------------
+
+# format justfile
+[no-exit-message]
+_format-just:
+    @just --unstable --fmt
+
+# format a single project
+[no-exit-message]
+_format-one project:
+    @just {{ project }}/format
+
+# formats all projects
+[no-exit-message]
+_format-all:
+    #!{{ bash }}
+    for project in {{ all-projects }}; do
+        echo formating $project
+        just ${project}/format
+    done
+
+# formats justfile or one or all projects (default: all)
+[no-exit-message]
+format project='all':
+    #!{{ bash }}
+    if [[ {{ project }} == 'all' ]]; then
+        just _format-all
+    elif [[ {{ project }} == 'just' ]]; then
+        just _format-just
+    else
+        just _format-one {{ project }}
+    fi
+
+# -----[ Build ]----------------------------------------------------------------
+# build a single project
+[no-exit-message]
+_build-one project:
+    @just {{ project }}/build
+
+# build all projects
+[no-exit-message]
+_build-all:
+    #!{{ bash }}
+    for project in {{ all-projects }}; do
+        echo building $project
+        just ${project}/build
+    done
 
-# lint
-lint:
-    just --unstable --fmt --check
+# build one or all projects (default: all)
+build project='all':
+    #!{{ bash }}
+    if [[ {{ project }} == 'all' ]]; then
+        just _build-all
+    else
+        just _build-one {{ project }}
+    fi