diff --git a/app/src/main/java/de/sebse/fuplanner/MainActivity.java b/app/src/main/java/de/sebse/fuplanner/MainActivity.java
index 0eade76..a81611b 100644
--- a/app/src/main/java/de/sebse/fuplanner/MainActivity.java
+++ b/app/src/main/java/de/sebse/fuplanner/MainActivity.java
@@ -369,7 +369,7 @@ public class MainActivity extends AppCompatActivity
                 accountByType,
                 KVVContentProvider.PROVIDER_NAME,
                 Bundle.EMPTY,
-                AccountGeneral.SYNC_INTERVAL);
+                Long.parseLong(Preferences.getString(this, R.array.pref_sync_frequency)));
         }
     }
 
diff --git a/app/src/main/java/de/sebse/fuplanner/fragments/PrefsFragment.java b/app/src/main/java/de/sebse/fuplanner/fragments/PrefsFragment.java
index 3b69850..1b715e6 100644
--- a/app/src/main/java/de/sebse/fuplanner/fragments/PrefsFragment.java
+++ b/app/src/main/java/de/sebse/fuplanner/fragments/PrefsFragment.java
@@ -1,12 +1,19 @@
 package de.sebse.fuplanner.fragments;
 
+import android.accounts.Account;
+import android.content.ContentResolver;
 import android.content.SharedPreferences;
 import android.os.Bundle;
+
 import androidx.preference.ListPreference;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceFragmentCompat;
-
+import de.sebse.fuplanner.MainActivity;
 import de.sebse.fuplanner.R;
+import de.sebse.fuplanner.services.fulogin.AccountGeneral;
+import de.sebse.fuplanner.services.kvv.sync.KVVContentProvider;
+import de.sebse.fuplanner.tools.CustomAccountManager;
+import de.sebse.fuplanner.tools.Preferences;
 import de.sebse.fuplanner.tools.logging.Logger;
 
 public class PrefsFragment extends PreferenceFragmentCompat implements SharedPreferences.OnSharedPreferenceChangeListener {
@@ -46,5 +53,18 @@ public class PrefsFragment extends PreferenceFragmentCompat implements SharedPre
         Preference preference = getPreferenceScreen().findPreference(s);
         if (preference instanceof ListPreference)
             preference.setSummary(((ListPreference) preference).getEntry());
+
+        if (getActivity() != null && getActivity() instanceof MainActivity) {
+            CustomAccountManager accountManager = ((MainActivity) getActivity()).getAccountManager();
+            Account accountByType = accountManager.getAccountByType(AccountGeneral.ACCOUNT_TYPE);
+            if (accountByType != null) {
+                ContentResolver.setSyncAutomatically(accountByType, KVVContentProvider.PROVIDER_NAME, true);
+                ContentResolver.addPeriodicSync(
+                    accountByType,
+                    KVVContentProvider.PROVIDER_NAME,
+                    Bundle.EMPTY,
+                    Long.parseLong(Preferences.getString(getActivity(), R.array.pref_sync_frequency)));
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/de/sebse/fuplanner/services/kvv/sync/KVVSyncAdapter.java b/app/src/main/java/de/sebse/fuplanner/services/kvv/sync/KVVSyncAdapter.java
index 4314afd..efc2663 100644
--- a/app/src/main/java/de/sebse/fuplanner/services/kvv/sync/KVVSyncAdapter.java
+++ b/app/src/main/java/de/sebse/fuplanner/services/kvv/sync/KVVSyncAdapter.java
@@ -55,7 +55,6 @@ public class KVVSyncAdapter extends AbstractThreadedSyncAdapter {
 
     private void init(Context context) {
         mKVV = new KVV(new KVVListener() {
-
             CustomAccountManager accountManager = null;
             @Override
             public CustomAccountManager getAccountManager() {
diff --git a/app/src/main/res/values-de/arrays.xml b/app/src/main/res/values-de/arrays.xml
index 44b5afe..feb7eb4 100644
--- a/app/src/main/res/values-de/arrays.xml
+++ b/app/src/main/res/values-de/arrays.xml
@@ -6,4 +6,13 @@
         <item>Angestellter</item>
         <item>Andere</item>
     </string-array>
+    
+    <string-array name="pref_sync_frequency_entries">
+        <item>Jede Stunde</item>
+        <item>Alle 2 Stunden</item>
+        <item>Alle 4 Stunden</item>
+        <item>Alle 6 Stunden</item>
+        <item>Alle 12 Stunden</item>
+        <item>Alle 24 Stunden</item>
+    </string-array>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 64f53fa..4360cdf 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -43,6 +43,9 @@
     <string name="pref_price_group_title">Kantinenpreisgruppe</string>
     <string name="pref_price_group_summary">Zeige nur Preise einer Gruppe</string>
     <string name="pref_price_group_dialog">Preisgruppe</string>
+    <string name="pref_sync_frequency_title">Synchronisationshäufigkeit</string>
+    <string name="pref_sync_frequency_summary">Stellt Häufigkeit der automatischen Synchronisation ein</string>
+    <string name="pref_sync_frequency_dialog">Sync-Frequenz</string>
     <string name="meals">Hauptgerichte</string>
     <string name="special_meals">Spezial Gerichte</string>
     <string name="side_dishes">Beilagen</string>
diff --git a/app/src/main/res/values/arrays.xml b/app/src/main/res/values/arrays.xml
index d52ccdf..9a02081 100644
--- a/app/src/main/res/values/arrays.xml
+++ b/app/src/main/res/values/arrays.xml
@@ -12,4 +12,21 @@
         <item>employee</item>
         <item>other</item>
     </string-array>
+
+    <string-array name="pref_sync_frequency_entries">
+        <item>Every hour</item>
+        <item>Every 2 hours</item>
+        <item>Every 4 hours</item>
+        <item>Every 6 hours</item>
+        <item>Every 12 hours</item>
+        <item>Every 24 hours</item>
+    </string-array>
+    <string-array name="pref_sync_frequency_values" translatable="false">
+        <item>1</item>
+        <item>2</item>
+        <item>4</item>
+        <item>6</item>
+        <item>12</item>
+        <item>24</item>
+    </string-array>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/preferences.xml b/app/src/main/res/values/preferences.xml
index d1535fd..9b36f25 100644
--- a/app/src/main/res/values/preferences.xml
+++ b/app/src/main/res/values/preferences.xml
@@ -10,4 +10,11 @@
     <string name="pref_last_visited_news" translatable="false">pref_last_visited_news</string>
 
     <string name="pref_set_auto_sync_on_startup" translatable="false">pref_set_auto_sync_on_startup</string>
+
+    <string-array name="pref_sync_frequency" translatable="false">
+        <item>@string/pref_sync_frequency</item>
+        <item>@string/pref_sync_frequency_default</item>
+    </string-array>
+    <string name="pref_sync_frequency" translatable="false">pref_sync_frequency</string>
+    <string name="pref_sync_frequency_default" translatable="false">6</string>
 </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 40b35d6..247a2ca 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -50,6 +50,9 @@
     <string name="pref_price_group_title">Canteen Price Group</string>
     <string name="pref_price_group_summary">Only show specific price category</string>
     <string name="pref_price_group_dialog">Price Group Selection</string>
+    <string name="pref_sync_frequency_title">Sync frequency</string>
+    <string name="pref_sync_frequency_summary">Set automatic background sync frequency</string>
+    <string name="pref_sync_frequency_dialog">Frequency selection</string>
     <string name="meals">Meals</string>
     <string name="special_meals">Special meals</string>
     <string name="side_dishes">Side Dishes</string>
diff --git a/app/src/main/res/xml/preferences.xml b/app/src/main/res/xml/preferences.xml
index 64392eb..c05cc82 100644
--- a/app/src/main/res/xml/preferences.xml
+++ b/app/src/main/res/xml/preferences.xml
@@ -9,6 +9,14 @@
         android:entries="@array/pref_price_group_entries"
         android:entryValues="@array/pref_price_group_values"
         android:dialogTitle="@string/pref_price_group_dialog" />
+    <ListPreference
+        android:key="@string/pref_sync_frequency"
+        android:defaultValue="@string/pref_sync_frequency_default"
+        android:title="@string/pref_sync_frequency_title"
+        android:summary="@string/pref_sync_frequency_summary"
+        android:entries="@array/pref_sync_frequency_entries"
+        android:entryValues="@array/pref_sync_frequency_values"
+        android:dialogTitle="@string/pref_sync_frequency_dialog" />
     <PreferenceScreen
         android:title="@string/open_data_policy"
         android:summary="@string/open_data_policy_summary">