diff --git a/app/build.gradle b/app/build.gradle
index 47ad114..1f8a8fc 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -21,8 +21,8 @@ android {
         applicationId "org.woheller69.solxpect"
         minSdkVersion 26
         targetSdk 35
-        versionCode 27
-        versionName "2.7"
+        versionCode 28
+        versionName "2.8"
 
         buildConfigField "String", "BASE_URL", "\"https://api.open-meteo.com/v1/\""
         buildConfigField "String", "TILES_URL","\"https://tile.openstreetmap.org/\""
@@ -52,4 +52,5 @@ dependencies {
     implementation 'net.lingala.zip4j:zip4j:2.9.1'
     implementation 'com.github.woheller69:CompassView:948f3db329'
     implementation 'androidx.webkit:webkit:1.5.0'
+    implementation 'com.github.woheller69:FreeDroidWarn:V1.6'
 }
\ No newline at end of file
diff --git a/app/src/main/java/org/woheller69/weather/activities/ForecastCityActivity.java b/app/src/main/java/org/woheller69/weather/activities/ForecastCityActivity.java
index 44c9124..230341a 100644
--- a/app/src/main/java/org/woheller69/weather/activities/ForecastCityActivity.java
+++ b/app/src/main/java/org/woheller69/weather/activities/ForecastCityActivity.java
@@ -174,6 +174,14 @@ public class ForecastCityActivity extends NavigationActivity implements IUpdatea
         refreshActionButton.getActionView().setOnClickListener(v -> m.performIdentifierAction(refreshActionButton.getItemId(), 0));
         if (isRefreshing) startRefreshAnimation();
 
+        SharedPreferences prefManager = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
+        boolean modeSum = prefManager.getBoolean("pref_summarize",false);
+        if (modeSum) {
+            menu.findItem(R.id.menu_summarize).getIcon().setAlpha(255);
+        } else {
+            menu.findItem(R.id.menu_summarize).getIcon().setAlpha(50);
+        }
+
         return true;
     }
 
@@ -210,6 +218,11 @@ public class ForecastCityActivity extends NavigationActivity implements IUpdatea
             alertDialogBuilder.setPositiveButton(getString(android.R.string.ok), (dialog, which) -> { });
             AlertDialog alertDialog = alertDialogBuilder.create();
             alertDialog.show();
+        } else if (id==R.id.menu_summarize){
+            SharedPreferences prefManager = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
+            boolean modeSum = prefManager.getBoolean("pref_summarize",false);
+            prefManager.edit().putBoolean("pref_summarize",!modeSum).commit();
+            recreate();
         }
 
         return super.onOptionsItemSelected(item);
diff --git a/app/src/main/java/org/woheller69/weather/activities/NavigationActivity.java b/app/src/main/java/org/woheller69/weather/activities/NavigationActivity.java
index 8098762..530768c 100644
--- a/app/src/main/java/org/woheller69/weather/activities/NavigationActivity.java
+++ b/app/src/main/java/org/woheller69/weather/activities/NavigationActivity.java
@@ -24,6 +24,7 @@ import android.os.Looper;
 import android.view.MenuItem;
 
 
+import org.woheller69.freeDroidWarn.FreeDroidWarn;
 import org.woheller69.weather.BuildConfig;
 import org.woheller69.weather.R;
 import org.woheller69.weather.database.SQLiteHelper;
@@ -55,6 +56,7 @@ public class NavigationActivity extends AppCompatActivity implements OnNavigatio
 
         mSharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
         mHandler = new Handler(Looper.getMainLooper());
+        FreeDroidWarn.showWarningOnUpgrade(this, BuildConfig.VERSION_CODE);
         prefManager = new AppPreferencesManager(PreferenceManager.getDefaultSharedPreferences(this));
         if (prefManager.showStarDialog(this)) {
             AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
diff --git a/app/src/main/res/drawable/ic_sum_24dp.xml b/app/src/main/res/drawable/ic_sum_24dp.xml
new file mode 100644
index 0000000..3ab808f
--- /dev/null
+++ b/app/src/main/res/drawable/ic_sum_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+  <path
+      android:pathData="M240,800v-80l260,-240 -260,-240v-80h480v120L431,280l215,200 -215,200h289v120L240,800Z"
+      android:fillColor="#FFFFFF"/>
+</vector>
\ No newline at end of file
diff --git a/app/src/main/res/menu/activity_forecast_city.xml b/app/src/main/res/menu/activity_forecast_city.xml
index 07a9b68..f190165 100644
--- a/app/src/main/res/menu/activity_forecast_city.xml
+++ b/app/src/main/res/menu/activity_forecast_city.xml
@@ -1,6 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/menu_summarize"
+        android:orderInCategory="70"
+        android:visible="true"
+        android:icon="@drawable/ic_sum_24dp"
+        app:showAsAction="always"
+        android:title="@string/settings_summarize" />
     <item
         android:id="@+id/menu_sun_position"
         android:orderInCategory="80"
diff --git a/fastlane/metadata/android/en-US/changelogs/28.txt b/fastlane/metadata/android/en-US/changelogs/28.txt
new file mode 100644
index 0000000..9872950
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/28.txt
@@ -0,0 +1,2 @@
+Toggle button for sum
+Add warning with link to Keep Android Open
\ No newline at end of file