diff --git a/apps.json b/apps.json
index 46be6165e..bdb7bc636 100644
--- a/apps.json
+++ b/apps.json
@@ -1042,7 +1042,7 @@
     "id": "bthrm",
     "name": "Bluetooth Heart Rate Monitor",
     "shortName": "BT HRM",
-    "version": "0.02",
+    "version": "0.03",
     "description": "Overrides Bangle.js's build in heart rate monitor with an external Bluetooth one.",
     "icon": "app.png",
     "type": "app",
diff --git a/apps/bthrm/ChangeLog b/apps/bthrm/ChangeLog
index 27a58dd78..481d855c8 100644
--- a/apps/bthrm/ChangeLog
+++ b/apps/bthrm/ChangeLog
@@ -2,3 +2,6 @@
 0.02: Make overriding the HRM event optional
       Emit BTHRM event for external sensor
       Add recorder app plugin
+0.03: Prevent readings from internal sensor mixing into BT values
+      Mark events with src property
+      Show actual source of event in app
diff --git a/apps/bthrm/boot.js b/apps/bthrm/boot.js
index 0aa8d5c96..fbc872630 100644
--- a/apps/bthrm/boot.js
+++ b/apps/bthrm/boot.js
@@ -12,7 +12,6 @@
   Bangle.isHRMOn = function() {
     var settings = require('Storage').readJSON("bthrm.json", true) || {};
 
-    print(settings);
     if (settings.enabled && !settings.replace){
         return origIsHRMOn();
     } else if (settings.enabled && settings.replace){
@@ -69,13 +68,11 @@
               var interval = dv.getUint16(idx,1); // in milliseconds
             }*/
             
-            
-            var eventName = settings.replace ? "HRM" : "BTHRM";
-            
-            Bangle.emit(eventName, {
+            Bangle.emit(settings.replace?"HRM":"BTHRM", {
               bpm:bpm,
-              confidence:100
-            });
+              confidence:100,
+              src:settings.replace?"bthrm":undefined
+            });            
           });
           return characteristic.startNotifications();
         }).then(function() {
@@ -107,8 +104,20 @@
     if (settings.enabled || !isOn){
       Bangle.setBTHRMPower(isOn, app);
     }
-    if (settings.enabled && !settings.replace || !isOn){
+    if ((settings.enabled && !settings.replace) || !settings.enabled || !isOn){
       origSetHRMPower(isOn, app);
     }
   }
+  
+  var settings = require('Storage').readJSON("bthrm.json", true) || {};
+  if (settings.enabled && settings.replace){
+  if (!(Bangle._PWR===undefined) && !(Bangle._PWR.HRM===undefined)){
+    for (var i = 0; i < Bangle._PWR.HRM.length; i++){
+      var app = Bangle._PWR.HRM[i];
+      origSetHRMPower(0, app);
+      Bangle.setBTHRMPower(1, app);
+      if (Bangle._PWR.HRM===undefined) break;
+    }
+  }
+}
 })();
diff --git a/apps/bthrm/bthrm.js b/apps/bthrm/bthrm.js
index 7c80c735f..712344b11 100644
--- a/apps/bthrm/bthrm.js
+++ b/apps/bthrm/bthrm.js
@@ -9,13 +9,14 @@ function draw(y, event, type, counter) {
   var px = g.getWidth()/2;
   g.reset();
   g.setFontAlign(0,0);
-  g.clearRect(0,y,g.getWidth(),y+80);
+  g.clearRect(0,y,g.getWidth(),y+75);
   if (type == null || event == null || counter == 0) return;
   var str = event.bpm + "";
   g.setFontVector(40).drawString(str,px,y+20);
   str = "Confidence: " + event.confidence;
   g.setFontVector(12).drawString(str,px,y+50);
   str = "Event: " + type;
+  if (type == "HRM") str += " Source: " + (event.src ? event.src : "internal");
   g.setFontVector(12).drawString(str,px,y+60);
 }
 
@@ -35,7 +36,6 @@ Bangle.on('BTHRM', onBtHrm);
 Bangle.on('HRM', onHrm);
 
 Bangle.setHRMPower(1,'bthrm')
-Bangle.setBTHRMPower(1,'bthrm')
 
 g.clear();
 Bangle.loadWidgets();
diff --git a/apps/bthrm/recorder.js b/apps/bthrm/recorder.js
index 40f64a676..b1c27660d 100644
--- a/apps/bthrm/recorder.js
+++ b/apps/bthrm/recorder.js
@@ -1,15 +1,15 @@
 (function(recorders) {
   recorders.bthrm = function() {
-    var bpm = 0;
+    var bpm = "";
     function onHRM(h) {
-        bpm = h.bpm;
+      bpm = h.bpm;
     }
     return {
       name : "BTHR",
       fields : ["BT Heartrate"],
       getValues : () => {
         result = [bpm];
-        bpm = 0;
+        bpm = "";
         return result;
       },
       start : () => {