diff --git a/apps/widalt/widalt.wid.js b/apps/widalt/widalt.wid.js
index dbd1a763e..2080a4197 100644
--- a/apps/widalt/widalt.wid.js
+++ b/apps/widalt/widalt.wid.js
@@ -1,38 +1,42 @@
-(()=>{
-  var alt="";
-  var lastAlt=0;
+(() => {
+  var alt = "";
+  var lastAlt;
+  var timeout;
   var settings = Object.assign({
-    interval: 5000,
+    interval: 60000,
   }, require('Storage').readJSON("widalt.json", true) || {});
-  Bangle.setBarometerPower(true,"widalt");
-  Bangle.on("pressure", (p)=>{
-    if (Math.floor(p.altitude)!=lastAlt) {
-      lastAlt=Math.floor(p.altitude);
-      alt=p.altitude.toFixed(0); 
-      var w = WIDGETS["widalt"].width;
-      WIDGETS["widalt"].width = 1 + (alt.length)*12+16;
-      if (w!=WIDGETS["widalt"].width) Bangle.drawWidgets();
-      else WIDGETS["widalt"].draw();
+  Bangle.setBarometerPower(true, "widalt");
+  Bangle.on("pressure", (p) => {
+    if (timeout) return;
+    //some other app is using the barometer - ignore new readings until our interval is up 
+    if (Math.floor(p.altitude) != lastAlt) {
+      lastAlt = Math.floor(p.altitude);
+      nextUpdate = Date.now() + settings.interval;
+      alt = p.altitude.toFixed(0);
+      WIDGETS.widalt.draw();
     }
-    Bangle.setBarometerPower(false,"widalt")
-    setTimeout(()=>{Bangle.setBarometerPower(true,"widalt");},settings.interval);
+    Bangle.setBarometerPower(false, "widalt");
+    timeout = setTimeout(() => {
+      timeout = undefined;
+      Bangle.setBarometerPower(true, "widalt");
+    }, settings.interval);
   });
-  
+
   function draw() {
-    if (!Bangle.isLCDOn()) return; 
+    if (!Bangle.isLCDOn()) return;
     g.reset();
-    g.setColor(g.theme.bg);
-    g.fillRect(this.x, this.y, this.x + this.width, this.y + 23); 
-    g.setColor(g.theme.fg); 
-    g.drawImage(atob("EBCBAAAAAAAIAAwgFXAX0BCYIIggTD/EYPZADkACf/4AAAAA"), this.x, this.y+4);
-g.setFontCustom(atob("AAAAABwAAOAAAgAAHAADwAD4AB8AB8AA+AAeAADAAAAOAAP+AH/8B4DwMAGBgAwMAGBgAwOAOA//gD/4AD4AAAAAAAABgAAcAwDAGAwAwP/+B//wAAGAAAwAAGAAAAAAAAIAwHgOA4DwMA+BgOwMDmBg4wOeGA/gwDwGAAAAAAAAAGAHA8A4DwMAGBhAwMMGBjgwOcOA+/gDj4AAAAABgAAcAAHgADsAA5gAOMAHBgBwMAP/+B//wABgAAMAAAAAAAgD4OB/AwOYGBjAwMYGBjBwMe8Bh/AIHwAAAAAAAAAfAAP8AHxwB8GAdgwPMGBxgwMOOAB/gAH4AAAAAAABgAAMAABgAwMAeBgPgMHwBj4AN8AB+AAPAABAAAAAAAMfAH38B/xwMcGBhgwMMGBjgwP+OA+/gDj4AAAAAAAAOAAH4AA/gQMMGBgzwME8BhvAOPgA/4AD8AAEAAAAAAGAwA4OAHBwAAA="), 46, atob("BAgMDAwMDAwMDAwMBQ=="), 21+(1<<8)+(1<<16));
+    g.clearRect(this.x, this.y, this.x + this.width, this.y + 23);
+    var w = this.width;
+    this.width = 1 + (alt.length) * 12 + 16;
+    if (w != this.width) Bangle.drawWidgets();
+    g.drawImage(atob("EBCBAAAAAAAIAAwgFXAX0BCYIIggTD/EYPZADkACf/4AAAAA"), this.x, this.y + 4);
+    g.setFontCustom(atob("AAAAABwAAOAAAgAAHAADwAD4AB8AB8AA+AAeAADAAAAOAAP+AH/8B4DwMAGBgAwMAGBgAwOAOA//gD/4AD4AAAAAAAABgAAcAwDAGAwAwP/+B//wAAGAAAwAAGAAAAAAAAIAwHgOA4DwMA+BgOwMDmBg4wOeGA/gwDwGAAAAAAAAAGAHA8A4DwMAGBhAwMMGBjgwOcOA+/gDj4AAAAABgAAcAAHgADsAA5gAOMAHBgBwMAP/+B//wABgAAMAAAAAAAgD4OB/AwOYGBjAwMYGBjBwMe8Bh/AIHwAAAAAAAAAfAAP8AHxwB8GAdgwPMGBxgwMOOAB/gAH4AAAAAAABgAAMAABgAwMAeBgPgMHwBj4AN8AB+AAPAABAAAAAAAMfAH38B/xwMcGBhgwMMGBjgwP+OA+/gDj4AAAAAAAAOAAH4AA/gQMMGBgzwME8BhvAOPgA/4AD8AAEAAAAAAGAwA4OAHBwAAA="), 46, atob("BAgMDAwMDAwMDAwMBQ=="), 21 + (1 << 8) + (1 << 16));
     g.setFontAlign(-1, 0);
-    g.drawString(alt, this.x+16, this.y + 12); 
+    g.drawString(alt, this.x + 16, this.y + 12);
   }
-  WIDGETS["widalt"] = {
+  WIDGETS.widalt = {
     area: "tr",
     width: 6,
     draw: draw
   };
-
 })();