diff --git a/apps/cogclock/app.js b/apps/cogclock/app.js
new file mode 100644
index 000000000..ba423fec1
--- /dev/null
+++ b/apps/cogclock/app.js
@@ -0,0 +1,111 @@
+Graphics.prototype.setFont16x32N = function() {
+  this.setFontCustom(atob(
+    "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"
+  ), "0".charCodeAt(0), 16, 32);
+};
+
+Bangle.loadWidgets();
+const r1 = 84, // inner radius
+  r3 = Math.min(Bangle.appRect.w/2, Bangle.appRect.h/2), // outer radius
+  r2 = (r1*3+r3*2)/5,
+  teeth = 12,
+  edge = 0.45, point = 0.35; // as fraction of arc
+
+const x = Bangle.appRect.x+Bangle.appRect.w/2,
+  y = Bangle.appRect.y+Bangle.appRect.h/2;
+
+/**
+ * Add coordinates for nth tooth to vertices
+ * @param {array} poly Array to add points to
+ * @param {number} n Tooth number
+ */
+function addTooth(poly, n) {
+  const
+    tau = Math.PI*2, arc = tau/teeth,
+    e = arc*edge, p = arc*point, s = (arc-(e+p))/2; // edge,point,slopes
+  const sin = Math.sin, cos = Math.cos;
+  let r = (n-1)*arc+e/2; // rads
+  poly.push(x+r2*sin(r), y-r2*cos(r));
+  r += s;
+  poly.push(x+r3*sin(r), y-r3*cos(r));
+  r += p;
+  poly.push(x+r3*sin(r), y-r3*cos(r));
+  r += s;
+  poly.push(x+r2*sin(r), y-r2*cos(r));
+}
+
+function drawCog() {
+  g.drawCircle(x, y, r1);
+  let poly = [];
+  for(let t = 1; t<=teeth; t++) {
+    addTooth(poly, t);
+  }
+  g.drawPoly(poly, true);
+}
+/**
+ * @param {number} n Tooth number to fill (1-based)
+ * @param col Fill color
+ */
+function fillTooth(n, col) {
+  if (!n) return; // easiest to check here
+  let poly = [];
+  addTooth(poly, n);
+  g.setColor(col).fillPoly(poly)
+    .setColor(g.theme.fg).drawPoly(poly); // fillPoly colored over the outline
+}
+
+let last = {tooth: 0}, timeOut;
+function draw() {
+  if (!Bangle.isLCDOn()) return; // no drawing, also no new update scheduled
+  g.reset();
+  const pad2 = num => (num<10 ? "0" : "")+num,
+    d = new Date(),
+    year = d.getFullYear(),
+    date = pad2(d.getDate())+pad2(d.getMonth()),
+    time = pad2(d.getHours())+pad2(d.getMinutes()),
+    tooth = Math.round(d.getSeconds()/60*teeth),
+    m = d.getMilliseconds();
+  if (year!==last.year) {
+    g.setFont("16x32N").setFontAlign(0, -1) // center top
+      .drawString(year, x, y+34, true);
+  }
+  if (date!==last.date) {
+    g.setFont("16x32N").setFontAlign(0, 1) // center bottom
+      .drawString(date, x, y-34, true);
+  }
+  if (time!==last.time) {
+    g.setFont("16x32N:2").setFontAlign(0, 0) // center middle
+      .drawString(time, x, y, true);
+  }
+  if (tooth!==last.tooth) {
+    if (tooth>last.tooth) {
+      for(let t = last.tooth; t<=tooth; t++) { // fill missing teeth
+        fillTooth(t, g.theme.fg2);
+      }
+    } else {
+      for(let t = last.tooth; t>tooth; t--) { // erase extraneous teeth
+        fillTooth(t, g.theme.bg);
+      }
+    }
+  }
+
+  last = {
+    year: year,
+    date: date,
+    time: time,
+    tooth: tooth,
+  };
+  timeOut = setTimeout(draw, 1000-m);
+}
+g.clear();
+Bangle.drawWidgets();
+Bangle.setUI("clock");
+Bangle.on("lcdPower", on => {
+  if (timeOut) {
+    clearTimeout(timeOut);
+    timeOut = undefined;
+  }
+  if (on) draw();
+});
+drawCog();
+draw();
diff --git a/apps/cogclock/icon.js b/apps/cogclock/icon.js
new file mode 100644
index 000000000..899cfc7c1
--- /dev/null
+++ b/apps/cogclock/icon.js
@@ -0,0 +1 @@
+require("heatshrink").decompress(atob("mEwwhC/ACcikQXpCQUCC4MgBAgqMCQIXEAgQXNBwIDCAggXOABAXLHwQAHMYQXmmczI5oiCBwUjCwIABmQXDEgJ0KCwMwCwMDDAgyGLYoWBgAXBgAYBMZIXEkYWBC4YYBGAh7FFwgHCC4YEBPRIwCFwYXFGAaqHC56oIIwgXFJAbUJLwpgHI4qPDIwpIFR4wWDLwa6BAAQHDVIYYCC/gYCC453MPIR3HU5gADd5bXHC4rvJMAYAECwJeCd5MjGAjVDC4ZHGNARIFGAgNDFw5IJUogwFC4gwBDAhGBBghIFBQhhBbYguEPAweCDAgACCwZACNg5LFXQYsIC5QAFdg4XcCxJHNBwYTEC6A+BJYQEEC5YYBMYhbCCxo0GCaIXbAHgA="))
\ No newline at end of file
diff --git a/apps/cogclock/icon.png b/apps/cogclock/icon.png
new file mode 100644
index 000000000..8520fcf5d
Binary files /dev/null and b/apps/cogclock/icon.png differ
diff --git a/apps/cogclock/metadata.json b/apps/cogclock/metadata.json
new file mode 100644
index 000000000..ab47c43a1
--- /dev/null
+++ b/apps/cogclock/metadata.json
@@ -0,0 +1,16 @@
+{
+  "id": "cogclock",
+  "name": "Cog Clock",
+  "version": "0.01",
+  "description": "A clock inside a cog",
+  "icon": "icon.png",
+  "screenshots": [{"url":"screenshot.png"}],
+  "type": "clock",
+  "tags": "clock",
+  "supports": ["BANGLEJS"],
+  "allow_emulator": true,
+  "storage": [
+    {"name":"cogclock.app.js","url":"app.js"},
+    {"name":"cogclock.img","url":"icon.js","evaluate":true}
+  ]
+}
diff --git a/apps/cogclock/screenshot.png b/apps/cogclock/screenshot.png
new file mode 100644
index 000000000..f49709aef
Binary files /dev/null and b/apps/cogclock/screenshot.png differ