diff --git a/apps/breathing/4o/index.html b/apps/breathing/4o/index.html
new file mode 100644
index 0000000..153ab9a
--- /dev/null
+++ b/apps/breathing/4o/index.html
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+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Breathing Rate Monitor</title>
+    <style>
+        body {
+            font-family: Arial, sans-serif;
+            text-align: center;
+            padding: 20px;
+        }
+        #rate {
+            font-size: 2em;
+            margin: 20px 0;
+        }
+        #startStopBtn {
+            padding: 10px 20px;
+            font-size: 1em;
+            cursor: pointer;
+        }
+        #advice {
+            margin-top: 20px;
+            font-size: 1.2em;
+            color: #2d89ef;
+        }
+    </style>
+</head>
+<body>
+    <h1>Breathing Rate Monitor</h1>
+    <p id="rate">Breaths per Minute: 0</p>
+    <button id="startStopBtn">Start</button>
+    <p id="advice"></p>
+
+    <script src="script.js"></script>
+</body>
+</html>
diff --git a/apps/breathing/4o/script.js b/apps/breathing/4o/script.js
new file mode 100644
index 0000000..10b9bb7
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+++ b/apps/breathing/4o/script.js
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+
+let isMonitoring = false;
+let breathCount = 0;
+let lastBreathTime = Date.now();
+let breathRates = [];
+
+const startStopBtn = document.getElementById('startStopBtn');
+const rateDisplay = document.getElementById('rate');
+const adviceDisplay = document.getElementById('advice');
+
+function startMonitoring() {
+    breathCount = 0;
+    breathRates = [];
+    lastBreathTime = Date.now();
+    window.addEventListener('devicemotion', detectBreathing);
+}
+
+function stopMonitoring() {
+    window.removeEventListener('devicemotion', detectBreathing);
+    calculateBreathingRate();
+}
+
+function detectBreathing(event) {
+    const acceleration = event.acceleration.y;  // Assuming the phone is vertical in the pocket
+    const threshold = 0.5;  // Adjust this value based on testing
+
+    if (Math.abs(acceleration) > threshold) {
+        const currentTime = Date.now();
+        const timeDiff = (currentTime - lastBreathTime) / 1000 / 60; // time difference in minutes
+        breathRates.push(1 / timeDiff);
+        breathCount++;
+        lastBreathTime = currentTime;
+        calculateBreathingRate();
+    }
+}
+
+function calculateBreathingRate() {
+    if (breathRates.length > 0) {
+        const averageBreathingRate = breathRates.reduce((a, b) => a + b, 0) / breathRates.length;
+        rateDisplay.textContent = `Breaths per Minute: ${Math.round(averageBreathingRate)}`;
+        giveAdvice(averageBreathingRate);
+    }
+}
+
+function giveAdvice(breathingRate) {
+    let advice = "";
+    if (breathingRate > 20) {
+        advice = "Your breathing seems rapid. Try taking deep, slow breaths.";
+    } else if (breathingRate < 12) {
+        advice = "Your breathing is quite slow. Consider taking deeper breaths.";
+    } else {
+        advice = "Your breathing rate is normal.";
+    }
+    adviceDisplay.textContent = advice;
+}
+
+startStopBtn.addEventListener('click', () => {
+    isMonitoring = !isMonitoring;
+    startStopBtn.textContent = isMonitoring ? "Stop" : "Start";
+    if (isMonitoring) {
+        startMonitoring();
+    } else {
+        stopMonitoring();
+    }
+});
