diff --git a/components/Home.js b/components/Home.js
index 783d8c4..af02576 100644
--- a/components/Home.js
+++ b/components/Home.js
@@ -14,7 +14,10 @@ import {
   determinePredictionText,
   formatWithOrdinalSuffix,
 } from './helpers/home'
-import { periodPredictionObservable } from '../local-storage'
+import {
+  fertilityTrackingObservable,
+  periodPredictionObservable,
+} from '../local-storage'
 
 import { Colors, Fonts, Sizes, Spacing } from '../styles'
 import { LocalDate } from '@js-joda/core'
@@ -28,11 +31,12 @@ const Home = ({ navigate, setDate }) => {
     navigate('CycleDay')
   }
 
+  const isFertilityTrackingEnabled = fertilityTrackingObservable.value
   const todayDateString = LocalDate.now().toString()
   const { getCycleDayNumber, getPredictedMenses } = cycleModule()
   const cycleDayNumber = getCycleDayNumber(todayDateString)
   const { status, phase, statusText } =
-    getFertilityStatusForDay(todayDateString)
+    isFertilityTrackingEnabled && getFertilityStatusForDay(todayDateString)
   const isPeriodPredictionEnabled = periodPredictionObservable.value
   const prediction = determinePredictionText(getPredictedMenses(), t)
 
@@ -55,7 +59,7 @@ const Home = ({ navigate, setDate }) => {
           </AppText>
         </View>
       )}
-      {phase && (
+      {isFertilityTrackingEnabled && phase && (
         <View style={styles.line}>
           <AppText style={styles.whiteSubtitle}>
             {formatWithOrdinalSuffix(phase)}
diff --git a/components/common/app-switch.js b/components/common/app-switch.js
index d45758f..dfa8dfe 100644
--- a/components/common/app-switch.js
+++ b/components/common/app-switch.js
@@ -1,10 +1,10 @@
 import React from 'react'
-import { StyleSheet, Switch, View } from 'react-native'
+import { Platform, StyleSheet, Switch, View } from 'react-native'
 import PropTypes from 'prop-types'
 
 import AppText from './app-text'
 
-import { Colors, Containers } from '../../styles'
+import { Colors, Containers, Spacing } from '../../styles'
 
 const AppSwitch = ({ onToggle, text, value, disabled }) => {
   const trackColor = { true: Colors.turquoiseDark }
@@ -34,9 +34,14 @@ AppSwitch.propTypes = {
 const styles = StyleSheet.create({
   container: {
     ...Containers.rowContainer,
+    marginTop: Spacing.tiny,
   },
   switch: {
     flex: 1,
+    transform:
+      Platform.OS === 'ios'
+        ? [{ scaleX: 0.8 }, { scaleY: 0.8 }]
+        : [{ scaleX: 1 }, { scaleY: 1 }],
   },
   textContainer: {
     flex: 4,
diff --git a/components/helpers/chart.js b/components/helpers/chart.js
index ba25223..245123f 100644
--- a/components/helpers/chart.js
+++ b/components/helpers/chart.js
@@ -1,6 +1,10 @@
 import { LocalDate } from '@js-joda/core'
 
-import { scaleObservable, unitObservable } from '../../local-storage'
+import {
+  fertilityTrackingObservable,
+  scaleObservable,
+  unitObservable,
+} from '../../local-storage'
 import { getCycleStatusForDay } from '../../lib/sympto-adapter'
 import { getCycleDay, getAmountOfCycleDays } from '../../db'
 
@@ -270,7 +274,8 @@ export function nfpLines() {
     if (dateString < cycle.startDate) updateCurrentCycle(dateString)
     if (cycle.noMoreCycles) return ret
 
-    const tempShift = cycle.status.temperatureShift
+    const tempShift =
+      fertilityTrackingObservable.value && cycle.status.temperatureShift
 
     if (tempShift) {
       if (tempShift.firstHighMeasurementDay.date === dateString) {
diff --git a/components/settings/customization/index.js b/components/settings/customization/index.js
index 4f202de..607a4e6 100644
--- a/components/settings/customization/index.js
+++ b/components/settings/customization/index.js
@@ -10,6 +10,7 @@ import SelectTabGroup from '../../cycle-day/select-tab-group'
 
 import {
   desireTrackingCategoryObservable,
+  fertilityTrackingObservable,
   moodTrackingCategoryObservable,
   noteTrackingCategoryObservable,
   painTrackingCategoryObservable,
@@ -18,6 +19,7 @@ import {
   mucusTrackingCategoryObservable,
   cervixTrackingCategoryObservable,
   saveDesireTrackingCategory,
+  saveFertilityTrackingEnabled,
   saveMoodTrackingCategory,
   saveNoteTrackingCategory,
   savePainTrackingCategory,
@@ -72,15 +74,21 @@ const Settings = () => {
     noteTrackingCategoryObservable.value
   )
 
-  const [isSecondarySymptomDisabled, setIsSecondarySymptomDisabled] =
-    useState(false)
-
-  const [isEnabled, setIsEnabled] = useState(false)
-  const toggleSwitch = () => setIsEnabled((previousState) => !previousState)
+  const [isFertilityTrackingEnabled, setFertilityTrackingEnabled] = useState(
+    fertilityTrackingObservable.value
+  )
+  const fertilityTrackingToggle = (value) => {
+    setFertilityTrackingEnabled(value)
+    saveFertilityTrackingEnabled(value)
+  }
 
   const temperatureTrackingCategoryToggle = (value) => {
     setTemperatureTrackingCategory(value)
     saveTemperatureTrackingCategory(value)
+    if (!value) {
+      setFertilityTrackingEnabled(false)
+      saveFertilityTrackingEnabled(false)
+    }
   }
   const mucusTrackingCategoryToggle = (value) => {
     manageSecondarySymptom(cervixTrackingCategoryObservable.value, value)
@@ -112,6 +120,11 @@ const Settings = () => {
     setPeriodPrediction(value)
     savePeriodPrediction(value)
   }
+
+  const fertilityTrackingText = isFertilityTrackingEnabled
+    ? labels.fertilityTracking.on
+    : labels.fertilityTracking.off
+
   const periodPredictionText = isPeriodPredictionEnabled
     ? labels.periodPrediction.on
     : labels.periodPrediction.off
@@ -148,15 +161,12 @@ const Settings = () => {
     if (!cervix && mucus) {
       setUseCervixAsSecondarySymptom(0)
       saveUseCervixAsSecondarySymptom(0)
-      setIsSecondarySymptomDisabled(false)
-    } else if (cervix && mucus) {
-      setIsSecondarySymptomDisabled(false)
     } else if (cervix && !mucus) {
       setUseCervixAsSecondarySymptom(1)
       saveUseCervixAsSecondarySymptom(1)
-      setIsSecondarySymptomDisabled(false)
     } else if (!cervix && !mucus) {
-      setIsSecondarySymptomDisabled(true)
+      setFertilityTrackingEnabled(false)
+      saveFertilityTrackingEnabled(false)
     }
     setMucusTrackingCategory(mucus)
     saveMucusTrackingCategory(mucus)
@@ -191,7 +201,6 @@ const Settings = () => {
           text={SYMPTOMS[1]}
           value={isTemperatureTrackingCategoryEnabled}
         />
-
         <AppSwitch
           onToggle={(enabled) => {
             mucusTrackingCategoryToggle(enabled)
@@ -199,7 +208,6 @@ const Settings = () => {
           text={SYMPTOMS[2]}
           value={isMucusTrackingCategoryEnabled}
         />
-
         <AppSwitch
           onToggle={(enabled) => {
             cervixTrackingCategoryToggle(enabled)
@@ -207,7 +215,6 @@ const Settings = () => {
           text={SYMPTOMS[3]}
           value={isCervixTrackingCategoryEnabled}
         />
-
         <AppSwitch
           onToggle={sexTrackingCategoryToggle}
           text={SYMPTOMS[4]}
@@ -234,14 +241,24 @@ const Settings = () => {
           value={isNoteTrackingCategoryEnabled}
         />
       </Segment>
-
-      <Segment title={'Fertility feature'}>
-        <AppSwitch
-          onToggle={toggleSwitch}
-          text={'If turned on ...'}
-          value={isEnabled}
-        />
-      </Segment>
+      <Pressable onPress={sliderDisabledPrompt}>
+        <Segment title={labels.fertilityTracking.title}>
+          {isTemperatureTrackingCategoryEnabled &&
+          (isMucusTrackingCategoryEnabled ||
+            isCervixTrackingCategoryEnabled) ? (
+            <>
+              <AppText>{labels.fertilityTracking.message}</AppText>
+              <AppSwitch
+                onToggle={fertilityTrackingToggle}
+                text={fertilityTrackingText}
+                value={isFertilityTrackingEnabled}
+              />
+            </>
+          ) : (
+            <AppText>{labels.disabled.message}</AppText>
+          )}
+        </Segment>
+      </Pressable>
 
       <Pressable onPress={sliderDisabledPrompt}>
         <Segment title={labels.tempScale.segmentTitle}>
@@ -257,11 +274,9 @@ const Settings = () => {
         </Segment>
       </Pressable>
 
-      {/* used to be switch for onCervixToggle */}
       <Pressable onPress={secondarySymptomDisabledPrompt}>
         <Segment title={labels.secondarySymptom.title}>
-          {!isTemperatureTrackingCategoryEnabled ||
-          isSecondarySymptomDisabled ? (
+          {!isFertilityTrackingEnabled ? (
             <AppText>{labels.secondarySymptom.disabled.message}</AppText>
           ) : (
             <>
diff --git a/i18n/en/settings.js b/i18n/en/settings.js
index bf26203..5a7a2e0 100644
--- a/i18n/en/settings.js
+++ b/i18n/en/settings.js
@@ -41,7 +41,7 @@ export default {
   disabled: {
     title: 'This feature is turned off',
     message:
-      'Please first enable the temperature tracking category in the customization settings.',
+      'To use the temperature scale please first enable the temperature tracking category above.',
   },
   tempReminder: {
     title: 'Temperature reminder',
@@ -66,6 +66,13 @@ export default {
         'To use the period reminder please first enable period predictions in the customization settings.',
     },
   },
+  fertilityTracking: {
+    title: 'Fertility phases calculation',
+    message:
+      'If you enter menstrual bleeding, temperature and cervical mucus or cervix data according to the sympto-thermal rules, drip will calculate cycle phases with the provided data.',
+    on: 'If you switch this off, drip will not show fertility related information.',
+    off: 'If you switch this on, drip will show fertility related information.',
+  },
   secondarySymptom: {
     title: 'Secondary symptom',
     cervixModeOn:
@@ -75,16 +82,16 @@ export default {
     disabled: {
       title: 'Disabled',
       message:
-        'To set a secondary symptom please first enable the temperature, cervical mucus or cervix tracking category as well as the fertility feature in the customization settings.',
+        'To set a secondary symptom please first enable the temperature, cervical mucus or cervix tracking category as well as the fertility feature above.',
       noSecondaryEnabled:
-        'To switch the secondary symptom both cervical mucus an cervix need to be enabled in the customization settings.',
+        'To switch the secondary symptom both cervical mucus and cervix need to be enabled above.',
     },
     mucus: 'cervical mucus',
     cervix: 'cervix',
   },
   periodPrediction: {
     title: 'Period predictions',
-    on: 'drip predicts your 3 next menstrual bleedings based on the statistics of your previously tracked cycles, min 3 complete cycles.',
+    on: 'drip predicts your 3 next menstrual bleedings based on statistics if you previously tracked at least 3 complete cycles.',
     off: 'There are no predictions for menstrual cycles displayed. If turned on the calendar and the home screen will display period predictions.',
   },
   passwordSettings: {
diff --git a/lib/sympto-adapter.js b/lib/sympto-adapter.js
index ef3b8fb..44e3d18 100644
--- a/lib/sympto-adapter.js
+++ b/lib/sympto-adapter.js
@@ -1,9 +1,15 @@
 import getFertilityStatus from 'sympto'
 import cycleModule from './cycle'
-import { useCervixAsSecondarySymptomObservable } from '../local-storage'
+import { fertilityTrackingObservable, useCervixAsSecondarySymptomObservable } from '../local-storage'
 import { fertilityStatus as labels } from '../i18n/en/labels'
 
+const isFertilityTrackingEnabled = fertilityTrackingObservable.value
+
 export function getFertilityStatusForDay(dateString) {
+  if (!isFertilityTrackingEnabled) {
+    return
+  }
+
   const status = getCycleStatusForDay(dateString)
   if (!status) return {
     status: labels.fertile,
@@ -34,6 +40,10 @@ export function getFertilityStatusForDay(dateString) {
 }
 
 export function getCycleStatusForDay(dateString, opts = {}) {
+  if (!isFertilityTrackingEnabled) {
+    return
+  }
+  
   const {
     getCycleForDay,
     getCyclesBefore,
diff --git a/local-storage.js b/local-storage.js
index 84b680d..66ce305 100644
--- a/local-storage.js
+++ b/local-storage.js
@@ -107,8 +107,9 @@ export async function saveTemperatureTrackingCategory(bool) {
   temperatureTrackingCategoryObservable.set(bool)
 
   if (!temperatureTrackingCategoryObservable.value) {
-    const result = await AsyncStorage.getItem('tempReminder')
-    if (JSON.parse(result).enabled) {
+    // if temperature tracking is turned off, the temperature reminder gets disabled
+    const tempReminderResult = await AsyncStorage.getItem('tempReminder')
+     if (tempReminderResult && JSON.parse(tempReminderResult).enabled) {
       tempReminderObservable.set(false)
     }
   }
@@ -170,6 +171,14 @@ export async function saveNoteTrackingCategory(bool) {
   noteTrackingCategoryObservable.set(bool)
 }
 
+export const fertilityTrackingObservable = Observable()
+setObvWithInitValue('fertilityTracking', fertilityTrackingObservable, true)
+
+export async function saveFertilityTrackingEnabled(bool) {
+  await AsyncStorage.setItem('fertilityTracking', JSON.stringify(bool))
+  fertilityTrackingObservable.set(bool)
+}
+
 async function setObvWithInitValue(key, obv, defaultValue) {
   const result = await AsyncStorage.getItem(key)
   let value