diff --git a/app/src/main/java/eu/faircode/netguard/IAB.java b/app/src/main/java/eu/faircode/netguard/IAB.java
index 56b35249..62061c83 100644
--- a/app/src/main/java/eu/faircode/netguard/IAB.java
+++ b/app/src/main/java/eu/faircode/netguard/IAB.java
@@ -28,6 +28,7 @@ import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.RemoteException;
+import android.preference.PreferenceManager;
 import android.util.Log;
 
 import com.android.vending.billing.IInAppBillingService;
@@ -184,8 +185,10 @@ public class IAB implements ServiceConnection {
     }
 
     public static boolean isPurchasedAny(Context context) {
-        if (Util.isDebuggable(context))
-            return true;
+        if (Util.isDebuggable(context)) {
+            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+            return !prefs.getBoolean("debug_ads", false);
+        }
 
         SharedPreferences prefs = context.getSharedPreferences("IAB", Context.MODE_PRIVATE);
         for (String key : prefs.getAll().keySet())
diff --git a/app/src/main/res/xml-v14/preferences.xml b/app/src/main/res/xml-v14/preferences.xml
index 19e602fa..3f4a9747 100644
--- a/app/src/main/res/xml-v14/preferences.xml
+++ b/app/src/main/res/xml-v14/preferences.xml
@@ -269,6 +269,10 @@
             <Preference
                 android:key="show_resolved"
                 android:title="@string/setting_show_resolved" />
+            <CheckBoxPreference
+                android:defaultValue="false"
+                android:key="debug_ads"
+                android:title="Debug advertisements" />
         </PreferenceCategory>
     </PreferenceScreen>
 
diff --git a/app/src/main/res/xml-v21/preferences.xml b/app/src/main/res/xml-v21/preferences.xml
index cca58799..4a67e230 100644
--- a/app/src/main/res/xml-v21/preferences.xml
+++ b/app/src/main/res/xml-v21/preferences.xml
@@ -269,6 +269,10 @@
             <Preference
                 android:key="show_resolved"
                 android:title="@string/setting_show_resolved" />
+            <eu.faircode.netguard.SwitchPreference
+                android:defaultValue="false"
+                android:key="debug_ads"
+                android:title="Debug advertisements" />
         </PreferenceCategory>
     </PreferenceScreen>