diff --git a/apps.json b/apps.json
index 503778f7a..ae2d6d09c 100644
--- a/apps.json
+++ b/apps.json
@@ -267,7 +267,7 @@
   { "id": "stetho",
     "name": "Stethoscope",
     "icon": "stetho.png",
-    "version":"0.0196",
+    "version":"0.0197",
     "description": "Hear your heart rate",
     "tags": "health",
     "storage": [
diff --git a/apps/stetho/stetho.js b/apps/stetho/stetho.js
index f37e145a8..10891fb75 100644
--- a/apps/stetho/stetho.js
+++ b/apps/stetho/stetho.js
@@ -25,7 +25,7 @@ function readHRM() {
     g.clearRect(0,100,239,239);
     g.moveTo(-100,0);
   }
-  let frequency = parseFloat(((170 - (a*960*4))*4.0) + 300);
+  let frequency = parseFloat((170 - (a*960*4)) + 500);
   if(frequency > 0) freq(frequency);
 
   g.setColor(1,1,1);