diff --git a/local-storage.js b/local-storage.js
index 3647683..1c1759e 100644
--- a/local-storage.js
+++ b/local-storage.js
@@ -127,6 +127,14 @@ setObvWithInitValue('mucus', mucusTrackingCategoryObservable, true)
 export async function saveMucusTrackingCategory(bool) {
   await AsyncStorage.setItem('mucus', JSON.stringify(bool))
   mucusTrackingCategoryObservable.set(bool)
+
+  // if mucus and cervix tracking is turned off, the fertility tracking gets disabled
+  if (!mucusTrackingCategoryObservable.value && !cervixTrackingCategoryObservable.value) {
+    const fertilityTrackingResult = await AsyncStorage.getItem('fertilityTracking')    
+    if (fertilityTrackingResult) {
+      saveFertilityTrackingEnabled(false)
+    }
+  }
 }
 
 export const cervixTrackingCategoryObservable = Observable()
@@ -135,6 +143,14 @@ setObvWithInitValue('cervix', cervixTrackingCategoryObservable, true)
 export async function saveCervixTrackingCategory(bool) {
   await AsyncStorage.setItem('cervix', JSON.stringify(bool))
   cervixTrackingCategoryObservable.set(bool)
+
+  // if cervix and mucus tracking is turned off, the fertility tracking gets disabled
+  if (!cervixTrackingCategoryObservable.value && !mucusTrackingCategoryObservable.value) {
+    const fertilityTrackingResult = await AsyncStorage.getItem('fertilityTracking')    
+    if (fertilityTrackingResult) {
+      saveFertilityTrackingEnabled(false)
+    }
+  }
 }
 
 export const sexTrackingCategoryObservable = Observable()