diff --git a/app/src/main/java/uk/org/openseizuredetector/SdDataSource.java b/app/src/main/java/uk/org/openseizuredetector/SdDataSource.java
index 488ebd1..14d60f2 100644
--- a/app/src/main/java/uk/org/openseizuredetector/SdDataSource.java
+++ b/app/src/main/java/uk/org/openseizuredetector/SdDataSource.java
@@ -92,6 +92,7 @@ public abstract class SdDataSource {
     private short mFallWindow;
     private int mMute;  // !=0 means muted by keypress on watch.
     private SdAlgNn mSdAlgNn;
+    private SdAlgHr mSdAlgHr;
 
     // Values for SD_MODE
     private int SIMPLE_SPEC_FMAX = 10;
@@ -133,12 +134,16 @@ public abstract class SdDataSource {
         mUtil.writeToSysLogFile("SdDataSource.start()");
         updatePrefs();
 
+        mSdAlgHr = new SdAlgHr(mContext);
+
         if (mSdData.mCnnAlarmActive) {
             mSdAlgNn = new SdAlgNn(mContext);
         } else {
             mSdData.mPseizure = 0;
         }
 
+
+
         // Start timer to check status of watch regularly.
         mDataStatusTime = new Time(Time.getCurrentTimezone());
         // use a timer to check the status of the pebble app on the same frequency
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index eb2f096..195ebc2 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -107,7 +107,7 @@
     <string name="AlarmFreqMaxSummary">Maximum Frequency of ROI (Hz) (Default = 8 Hz)</string>
     <string name="AlarmFreqMinTitle">AlarmFreqMin (Hz)</string>
     <string name="AlarmFreqMinSummary">Minimum Frequency of ROI (Hz) (Default = 3 Hz)</string>
-    <string name="HRAlarmEnabledTitle">Enable Heart Rate Alarm</string>
+    <string name="HRAlarmEnabledTitle">Enable Simple Heart Rate Alarm</string>
     <string name="HRAlarmEnabledSummary" />
     <string name="HRNullAlarmTitle">Treat a Null heart rate as an alarm condition</string>
     <string name="HRNullAlarmSummary" />
@@ -296,7 +296,7 @@
     <string name="AcceptAlarmBtnTxt">Accept Alarm</string>
     <string name="CancelAudibleButtonTxt">Cancel Audible (temporarily)</string>
     <string name="DataLoggingSettingsTitle">Data Logging Settings</string>
-    <string name="HeartRateAlarmSettingsTitle">Heart Rate Alarm Settings</string>
+    <string name="HeartRateAlarmSettingsTitle">Simple Heart Rate Alarm Settings</string>
     <string name="AlarmFunctionalitySettingsTitle">Alarm Functionality Settings</string>
     <string name="AudibleAlarmSettingsTitle">Audible Alarm Settings</string>
     <string name="SMSAlarmSettingsTitle">SMS Alarm Settings</string>
@@ -489,16 +489,18 @@
     <string name="privacy_policy_button_title">Privacy Policy</string>
     <string name="data_sharing_button_title">Data Sharing</string>
     <string name="HRAdaptiveAlarmEnabledTitle">Enable Adaptive Threshold Heart Rate Alarm</string>
-    <string name="HRAdaptiveAlarmWindowTitle">Moving Average Time Window (seconds)</string>
-    <string name="HRAdaptiveAlarmWindowSummary">Window must be a multiple of 5 seconds</string>
+    <string name="HRAdaptiveAlarmWindowTitle">Window Size for Adaptive Threshold Calculation</string>
+    <string name="HRAdaptiveAlarmWindowSummary">Moving Average Time Window (seconds) must be a multiple of 5 seconds</string>
     <string name="HRAdaptiveThreshTitle">Adaptive Threshold Offset (bpm)</string>
     <string name="HRAdaptiveThreshSummary">The alarm threshold offset from the average measured Heart Rate (bpm)</string>
-    <string name="HRAverageAlarmEnabledTitle">Enable Alarm based on rolling average heart rate</string>
+    <string name="HRAverageAlarmEnabledTitle">Enable Rolling Average Heart Rate Alarm</string>
     <string name="HRAverageAlarmEnabledSummary" />
     <string name="HRAverageThreshMinSummary">Lower Heart Rate Threshold for Average Heart Rate Alarm</string>
     <string name="HRAverageThreshMinTitle">Lower Threshold for Average Heart Rate Alarm</string>
     <string name="HRAverageThreshMaxSummary">Upper Heart Rate Threshold for Average Heart Rate Alarm</string>
     <string name="HRAverageThreshMaxTitle">Upper Threshold for Average Heart Rate Alarm</string>
-    <string name="HRAverageAlarmWindowTitle">Window size (in seconds) for Average Heart Rate Calculation</string>
+    <string name="HRAverageAlarmWindowTitle">Window size for Average Heart Rate Calculation</string>
     <string name="HRAverageAlarmWindowSummary">Window size (in seconds) for Average Heart Rate Calculation - must be a factor of 5 seconds.</string>
+    <string name="HeartRateAdaptiveAlarmSettingsTitle">Adaptive Heart Rate Alarm Settings</string>
+    <string name="HeartRateAverageAlarmSettingsTitle">Average Heart Rate Alarm Settings</string>
 </resources>
diff --git a/app/src/main/res/xml/seizure_detector_prefs.xml b/app/src/main/res/xml/seizure_detector_prefs.xml
index fc64e98..0ed2a9c 100644
--- a/app/src/main/res/xml/seizure_detector_prefs.xml
+++ b/app/src/main/res/xml/seizure_detector_prefs.xml
@@ -1,7 +1,5 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- The ListPreference data is defined in pebble_datasource_values.xml -->
-<PreferenceScreen
-    xmlns:android="http://schemas.android.com/apk/res/android">
+<?xml version="1.0" encoding="utf-8"?><!-- The ListPreference data is defined in pebble_datasource_values.xml -->
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
     <PreferenceCategory android:title="@string/AlgorithmSelectionTitle">
         <CheckBoxPreference
             android:defaultValue="true"
@@ -18,6 +16,16 @@
             android:key="HRAlarmActive"
             android:summary="@string/HRAlarmEnabledSummary"
             android:title="@string/HRAlarmEnabledTitle" />
+        <CheckBoxPreference
+            android:defaultValue="false"
+            android:key="HRAdaptiveAlarmActive"
+            android:summary="@string/HRAlarmEnabledSummary"
+            android:title="@string/HRAdaptiveAlarmEnabledTitle" />
+        <CheckBoxPreference
+            android:defaultValue="false"
+            android:key="HRAverageAlarmActive"
+            android:summary="@string/HRAverageAlarmEnabledSummary"
+            android:title="@string/HRAverageAlarmEnabledTitle" />
         <CheckBoxPreference
             android:defaultValue="false"
             android:key="O2SatAlarmActive"
@@ -90,7 +98,8 @@
             android:key="HRThreshMax"
             android:summary="@string/HRThreshMaxSummary"
             android:title="@string/HRThreshMaxTitle" />
-
+    </PreferenceCategory>
+    <PreferenceCategory android:title="@string/HeartRateAdaptiveAlarmSettingsTitle">
         <CheckBoxPreference
             android:defaultValue="false"
             android:key="HRAdaptiveAlarmActive"
@@ -106,6 +115,8 @@
             android:key="HRAdaptiveAlarmThresh"
             android:summary="@string/HRAdaptiveThreshSummary"
             android:title="@string/HRAdaptiveThreshTitle" />
+    </PreferenceCategory>
+    <PreferenceCategory android:title="@string/HeartRateAverageAlarmSettingsTitle">
 
         <CheckBoxPreference
             android:defaultValue="false"
@@ -171,5 +182,4 @@
     </PreferenceCategory>
 
 
-
 </PreferenceScreen>