diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index 88654b5..16f2993 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -5,12 +5,12 @@ plugins {
 
 android {
     namespace 'uca.baptistearthur.geocaching'
-    compileSdk 32
+    compileSdk 33
 
     defaultConfig {
         applicationId "uca.baptistearthur.geocaching"
         minSdk 16
-        targetSdk 32
+        targetSdk 33
         versionCode 1
         versionName "1.0"
 
@@ -34,7 +34,7 @@ android {
 
 dependencies {
 
-    implementation 'androidx.core:core-ktx:1.7.0'
+    implementation 'androidx.core:core-ktx:1.9.0'
     implementation 'androidx.appcompat:appcompat:1.6.1'
     implementation 'com.google.android.material:material:1.8.0'
     testImplementation 'junit:junit:4.13.2'
diff --git a/app/src/androidTest/java/uca/baptistearthur/geocaching/MainWindowActivity.kt b/app/src/androidTest/java/uca/baptistearthur/geocaching/MainWindowActivity.kt
new file mode 100644
index 0000000..e69de29
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 283d29b..a2340f2 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -11,6 +11,15 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.Geocaching"
-        tools:targetApi="31" />
+        tools:targetApi="31">
+
+        <activity android:name=".MainWindow" android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+
+    </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/uca/baptistearthur/geocaching/MainWindow.kt b/app/src/main/java/uca/baptistearthur/geocaching/MainWindow.kt
new file mode 100644
index 0000000..1730b46
--- /dev/null
+++ b/app/src/main/java/uca/baptistearthur/geocaching/MainWindow.kt
@@ -0,0 +1,13 @@
+package uca.baptistearthur.geocaching
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+
+class MainWindow: AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.main_window)
+    }
+
+}
\ No newline at end of file
diff --git a/app/src/main/res/layout/main_window.xml b/app/src/main/res/layout/main_window.xml
new file mode 100644
index 0000000..d3bf93f
--- /dev/null
+++ b/app/src/main/res/layout/main_window.xml
@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="55dp"
+        android:background="@color/green">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/app_name"
+            android:textColor="@color/white"
+            android:layout_marginStart="25dp"
+            android:gravity="center"
+            android:textSize="20sp"
+            android:layout_marginLeft="25dp" />
+
+    </FrameLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="55dp"
+        android:gravity="center"
+        >
+
+
+        <Button
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/profil"
+            android:textSize="11sp"
+            android:layout_marginRight="20dp"
+            style="?android:attr/buttonBarButtonStyle"/>
+
+        <Button
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/carte"
+            android:textSize="11sp"
+            android:layout_marginRight="20dp"
+            android:layout_marginLeft="20dp"
+            style="?android:attr/buttonBarButtonStyle" />
+
+        <Button
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/liste"
+            android:textSize="11sp"
+            android:layout_marginLeft="20dp"
+            style="?android:attr/buttonBarButtonStyle"/>
+
+    </LinearLayout>
+
+</LinearLayout>
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index f8c6127..e863661 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -7,4 +7,6 @@
     <color name="teal_700">#FF018786</color>
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
+    <color name="green">#FF3D7D3C</color>
+    <color name="green_variant">#FF659964</color>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index a5ae134..77daa05 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,6 @@
 <resources>
     <string name="app_name">Geocaching</string>
+    <string name="profil">Profil</string>
+    <string name="carte">Carte</string>
+    <string name="liste">Liste</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index cdc6eae..c27377e 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -2,8 +2,8 @@
     <!-- Base application theme. -->
     <style name="Theme.Geocaching" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
         <!-- Primary brand color. -->
-        <item name="colorPrimary">@color/purple_500</item>
-        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorPrimary">@color/green</item>
+        <item name="colorPrimaryVariant">@color/green_variant</item>
         <item name="colorOnPrimary">@color/white</item>
         <!-- Secondary brand color. -->
         <item name="colorSecondary">@color/teal_200</item>