diff --git a/android_app/app/src/main/res/values-de/strings.xml b/android_app/app/src/main/res/values-de/strings.xml
index 4c2d4e59..c46a696b 100644
--- a/android_app/app/src/main/res/values-de/strings.xml
+++ b/android_app/app/src/main/res/values-de/strings.xml
@@ -135,4 +135,15 @@
     <string name="label_bmr">Grundumsatz (BMR)</string>
     <string name="info_measuring">Messe Gewicht: %.2f</string>
     <string name="info_new_data_added">%1$.2f%2$s [%3$s] zu %4$s hinzugefügt</string>
+    <string name="error_max_scale_users">Maximale Anzahl gleichzeitiger Benutzer erreicht.</string>
+    <string name="info_step_on_scale">Bitte steigen Sie barfuß auf die Waage zur Referenzmessung</string>
+    <string name="label_automatic">auto</string>
+    <string name="label_category_body_metrics_estimation">Körpermetriken abschätzen</string>
+    <string name="label_category_display">Anzeige</string>
+    <string name="label_category_measurement_database">Messwertedatenbank</string>
+    <string name="label_category_misc">Verschiedenes</string>
+    <string name="label_estimate_fat">Körperfettschätzung</string>
+    <string name="label_estimate_fat_formula">Körperfettformel</string>
+    <string name="label_estimate_water">Körperwasserschätzung</string>
+    <string name="label_estimate_water_formula">Körperwasserformel</string>
 </resources>
\ No newline at end of file
diff --git a/android_app/app/src/main/res/values/strings.xml b/android_app/app/src/main/res/values/strings.xml
index 425027c0..be1460db 100644
--- a/android_app/app/src/main/res/values/strings.xml
+++ b/android_app/app/src/main/res/values/strings.xml
@@ -123,6 +123,11 @@
     <string name="label_estimate_fat">Estimate body fat</string>
     <string name="label_estimate_water">Estimate body water</string>
 
+    <string name="label_category_display">Display</string>
+    <string name="label_category_body_metrics_estimation">Body metrics estimation</string>
+    <string name="label_category_measurement_database">Measurement database</string>
+    <string name="label_category_misc">Miscellaneous</string>
+
     <string name="label_estimate_fat_formula">Body fat formula</string>
     <string name="label_estimate_water_formula">Body water formula</string>
     <string name="label_automatic">auto</string>
diff --git a/android_app/app/src/main/res/xml/graph_preferences.xml b/android_app/app/src/main/res/xml/graph_preferences.xml
index 4fa78e1a..327f2348 100644
--- a/android_app/app/src/main/res/xml/graph_preferences.xml
+++ b/android_app/app/src/main/res/xml/graph_preferences.xml
@@ -1,10 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
-    <CheckBoxPreference android:title="@string/label_enable_labels" android:summaryOn="@string/info_is_visible" android:summaryOff="@string/info_is_not_visible" android:key="labelsEnable" android:defaultValue="true"/>
-    <CheckBoxPreference android:title="@string/label_enable_points" android:summaryOn="@string/info_is_visible" android:summaryOff="@string/info_is_not_visible" android:key="pointsEnable" android:defaultValue="true"/>
-    <CheckBoxPreference android:title="@string/label_delete_confirmation" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable" android:key="deleteConfirmationEnable" android:defaultValue="true" />
-    <CheckBoxPreference android:title="@string/label_average_data" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable" android:key="averageData" android:defaultValue="true" />
-    <CheckBoxPreference android:title="@string/label_goal_line" android:summaryOn="@string/info_is_visible" android:summaryOff="@string/info_is_not_visible" android:key="goalLine" android:defaultValue="true" />
-    <CheckBoxPreference android:title="@string/label_regression_line" android:summaryOn="@string/info_is_visible" android:summaryOff="@string/info_is_not_visible" android:key="regressionLine" android:defaultValue="false" />
-    <EditTextPreference android:title="@string/label_regression_line_degree" android:key="regressionLineOrder" android:defaultValue="1" />
+    <PreferenceCategory android:title="@string/label_category_display">
+        <CheckBoxPreference android:title="@string/label_enable_labels" android:summaryOn="@string/info_is_visible" android:summaryOff="@string/info_is_not_visible" android:key="labelsEnable" android:defaultValue="true"/>
+        <CheckBoxPreference android:title="@string/label_enable_points" android:summaryOn="@string/info_is_visible" android:summaryOff="@string/info_is_not_visible" android:key="pointsEnable" android:defaultValue="true"/>
+        <CheckBoxPreference android:title="@string/label_goal_line" android:summaryOn="@string/info_is_visible" android:summaryOff="@string/info_is_not_visible" android:key="goalLine" android:defaultValue="true" />
+        <CheckBoxPreference android:title="@string/label_regression_line" android:summaryOn="@string/info_is_visible" android:summaryOff="@string/info_is_not_visible" android:key="regressionLine" android:defaultValue="false" />
+        <EditTextPreference android:title="@string/label_regression_line_degree" android:key="regressionLineOrder" android:defaultValue="1" />
+    </PreferenceCategory>
+    <PreferenceCategory android:title="@string/label_category_misc">
+        <CheckBoxPreference android:title="@string/label_delete_confirmation" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable" android:key="deleteConfirmationEnable" android:defaultValue="true" />
+        <CheckBoxPreference android:title="@string/label_average_data" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable" android:key="averageData" android:defaultValue="true" />
+    </PreferenceCategory>
 </PreferenceScreen>
\ No newline at end of file
diff --git a/android_app/app/src/main/res/xml/measurement_preferences.xml b/android_app/app/src/main/res/xml/measurement_preferences.xml
index 6c873f85..492a3bfb 100644
--- a/android_app/app/src/main/res/xml/measurement_preferences.xml
+++ b/android_app/app/src/main/res/xml/measurement_preferences.xml
@@ -1,14 +1,20 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
-    <CheckBoxPreference android:title="@string/label_fat" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable" android:key="fatEnable" android:defaultValue="true"/>
-    <CheckBoxPreference android:title="@string/label_water" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"   android:key="waterEnable" android:defaultValue="true"/>
-    <CheckBoxPreference android:title="@string/label_muscle" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="muscleEnable" android:defaultValue="true"/>
-    <CheckBoxPreference android:title="@string/label_bone" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="boneEnable" android:defaultValue="false"/>
-    <CheckBoxPreference android:title="@string/label_waist" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="waistEnable" android:defaultValue="false"/>
-    <CheckBoxPreference android:title="@string/label_hip" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="hipEnable" android:defaultValue="false"/>
-    <CheckBoxPreference android:title="@string/label_estimate_fat" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="estimateFatEnable" android:defaultValue="false"/>
-    <ListPreference android:title="@string/label_estimate_fat_formula" android:key="estimateFatFormula" android:defaultValue="BF_GALLAGHER"/>
-    <CheckBoxPreference android:title="@string/label_estimate_water" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="estimateWaterEnable" android:defaultValue="false"/>
-    <ListPreference android:title="@string/label_estimate_water_formula" android:key="estimateWaterFormula" android:defaultValue="TBW_LEESONGKIM"/>
-    <Preference android:title="@string/label_delete_all" android:key="deleteAll"></Preference>
+    <PreferenceCategory android:title="@string/label_category_display">
+        <CheckBoxPreference android:title="@string/label_fat" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable" android:key="fatEnable" android:defaultValue="true"/>
+        <CheckBoxPreference android:title="@string/label_water" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"   android:key="waterEnable" android:defaultValue="true"/>
+        <CheckBoxPreference android:title="@string/label_muscle" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="muscleEnable" android:defaultValue="true"/>
+        <CheckBoxPreference android:title="@string/label_bone" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="boneEnable" android:defaultValue="false"/>
+        <CheckBoxPreference android:title="@string/label_waist" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="waistEnable" android:defaultValue="false"/>
+        <CheckBoxPreference android:title="@string/label_hip" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="hipEnable" android:defaultValue="false"/>
+    </PreferenceCategory>
+    <PreferenceCategory android:title="@string/label_category_body_metrics_estimation">
+        <CheckBoxPreference android:title="@string/label_estimate_fat" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="estimateFatEnable" android:defaultValue="false"/>
+        <ListPreference android:title="@string/label_estimate_fat_formula" android:key="estimateFatFormula" android:defaultValue="BF_GALLAGHER"/>
+        <CheckBoxPreference android:title="@string/label_estimate_water" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="estimateWaterEnable" android:defaultValue="false"/>
+        <ListPreference android:title="@string/label_estimate_water_formula" android:key="estimateWaterFormula" android:defaultValue="TBW_LEESONGKIM"/>
+    </PreferenceCategory>
+    <PreferenceCategory android:title="@string/label_category_measurement_database">
+        <Preference android:title="@string/label_delete_all" android:key="deleteAll"></Preference>
+    </PreferenceCategory>
 </PreferenceScreen>
\ No newline at end of file