diff --git a/apps/altimeter/ChangeLog b/apps/altimeter/ChangeLog
index 5560f00bc..29388520e 100644
--- a/apps/altimeter/ChangeLog
+++ b/apps/altimeter/ChangeLog
@@ -1 +1,2 @@
 0.01: New App!
+0.02: Actually upload correct code
diff --git a/apps/altimeter/app.js b/apps/altimeter/app.js
index 06c254a36..cac4e80fd 100644
--- a/apps/altimeter/app.js
+++ b/apps/altimeter/app.js
@@ -1,34 +1,30 @@
-// place your const, vars, functions or classes here
+Bangle.setBarometerPower(true, "app");
 
-// clear the screen
-g.clear();
+g.clear(1);
+Bangle.loadWidgets();
+Bangle.drawWidgets();
+var zero = 0;
+var R = Bangle.appRect;
+var y = R.y + R.h/2;
+var MEDIANLENGTH = 20;
+var avr = [], median;
+var value = 0;
 
-var n = 0;
-
-// redraw the screen
-function draw() {
-  g.reset().clearRect(Bangle.appRect);
-  g.setFont("6x8").setFontAlign(0,0).drawString("Up / Down",g.getWidth()/2,g.getHeight()/2 - 20);
-  g.setFont("Vector",60).setFontAlign(0,0).drawString(n,g.getWidth()/2,g.getHeight()/2 + 30);
-}
-
-// Respond to user input
-Bangle.setUI({mode: "updown"}, function(dir) {
-  if (dir<0) {
-    n--;
-    draw();
-  } else if (dir>0) {
-    n++;
-    draw();
-  } else {
-    n = 0;
-    draw();
+Bangle.on('pressure', function(e) {
+  while (avr.length>MEDIANLENGTH) avr.pop();
+  avr.unshift(e.altitude);
+  median = avr.slice().sort();
+  g.reset().clearRect(0,y-30,g.getWidth()-10,y+30);
+  if (median.length>10) {
+    var mid = median.length>>1;
+    value = E.sum(median.slice(mid-4,mid+5)) / 9;
+    g.setFont("Vector",50).setFontAlign(0,0).drawString((value-zero).toFixed(1), g.getWidth()/2, y);
   }
 });
 
-// First draw...
-draw();
-
-// Load widgets
-Bangle.loadWidgets();
-Bangle.drawWidgets();
+g.reset();
+g.setFont("6x8").setFontAlign(0,0).drawString(/*LANG*/"ALTITUDE (m)", g.getWidth()/2, y-40);
+g.setFont("6x8").setFontAlign(0,0,3).drawString(/*LANG*/"ZERO", g.getWidth()-5, g.getHeight()/2);
+setWatch(function() {
+  zero = value;
+}, (process.env.HWVERSION==2) ? BTN1 : BTN2, {repeat:true});
diff --git a/apps/altimeter/metadata.json b/apps/altimeter/metadata.json
index 137ceb8ba..8bdbf3022 100644
--- a/apps/altimeter/metadata.json
+++ b/apps/altimeter/metadata.json
@@ -1,10 +1,10 @@
 { "id": "altimeter",
   "name": "Altimeter",
-  "version":"0.01",
+  "version":"0.02",
   "description": "Simple altimeter that can display height changed using Bangle.js 2's built in pressure sensor.",
   "icon": "app.png",
   "tags": "tool,outdoors",
-  "supports" : ["BANGLEJS2"],  
+  "supports" : ["BANGLEJS2"],
   "storage": [
     {"name":"altimeter.app.js","url":"app.js"},
     {"name":"altimeter.img","url":"app-icon.js","evaluate":true}