diff --git a/apps/slevel/spiritlevel.js b/apps/slevel/spiritlevel.js
index 492fc60e1..9db54b825 100644
--- a/apps/slevel/spiritlevel.js
+++ b/apps/slevel/spiritlevel.js
@@ -1,5 +1,7 @@
 g.clear();
 var old = {x:0,y:0};
+var W = g.getWidth();
+var H = g.getHeight();
 Bangle.on('accel',function(v) {
   var max = Math.max(Math.abs(v.x),Math.abs(v.y),Math.abs(v.z));
   if (Math.abs(v.y)==max) {
@@ -14,17 +16,17 @@ Bangle.on('accel',function(v) {
   g.setColor(1,1,1);
   g.setFont("6x8",2);
   g.setFontAlign(0,-1);
-  g.clearRect(60,0,180,16);
-  g.drawString(ang.toFixed(1),120,0);
+  g.clearRect(W*(1/4),0,W*(3/4),H*(1/16));
+  g.drawString(ang.toFixed(1),W/2,0);
   var n = {
-    x:E.clip(120+v.x*256,4,236),
-    y:E.clip(120+v.y*256,4,236)};
+    x:E.clip(W/2+v.x*256,4,W-4),
+    y:E.clip(H/2+v.y*256,4,H-4)};
   g.clearRect(old.x-3,old.y-3,old.x+6,old.y+6);
   g.setColor(1,1,1);
   g.fillRect(n.x-3,n.y-3,n.x+6,n.y+6);
   g.setColor(1,0,0);
-  g.drawCircle(120,120,20);
-  g.drawCircle(120,120,60);
-  g.drawCircle(120,120,100);
+  g.drawCircle(W/2,H/2,W*(1/12));
+  g.drawCircle(W/2,H/2,W*(1/4));
+  g.drawCircle(W/2,H/2,W*(5/12));
   old = n;
 });