diff --git a/apps/batterybooster/README.md b/apps/batterybooster/README.md
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+No content
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diff --git a/apps/batterybooster/boot.js b/apps/batterybooster/boot.js
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+++ b/apps/batterybooster/boot.js
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+{
+    let softOffTimeout;
+    Bangle.on("lock", (on) => {
+        if (on) {
+            softOffTimeout = setTimeout(() => Bangle.softOff(), 10800000);
+            Bangle.setLCDTimeout(2);
+        }
+        else {
+            if (softOffTimeout) clearTimeout(softOffTimeout);
+        }
+    });
+    Bangle.on("touch", () => {
+        Bangle.setLCDTimeout(10);
+    });
+    setInterval(() => {
+        let getBrightness = (hour) => {
+            let radians = (Math.PI / 12) * (hour - 6);
+            let brightness = Math.sin(radians) / 2 + 0.5;
+            return brightness;
+        };
+
+        const d = new Date();
+        let hour = d.getHours();
+        Bangle.setLCDBrightness(getBrightness(hour));
+    }, 3600000);
+}
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diff --git a/apps/batterybooster/metadata.json b/apps/batterybooster/metadata.json
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+++ b/apps/batterybooster/metadata.json
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+{
+    "id": "batterybooster",
+    "name": "Battery Booster",
+    "icon": "app.png",
+    "version": "0.1",
+    "description": "A bootloader app which adds scripts to boost battery life of your Bangle.js 2",
+    "type": "bootloader",
+    "tags": "tools, system",
+    "readme": "README.md",
+    "supports": [
+        "BANGLEJS2"
+    ],
+    "storage": [
+        {
+            "name": "batterybooster.boot.js",
+            "url": "boot.js"
+        }
+    ]
+}
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