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Your Apple Watch measures your heart rate every five minutes— Cardiogram tells you what that data means. We help you understand sleep, stress, fitness, and health.The Cardiogram native Watch app and complication shows you a graph of your heart rate in real time.On your iPhone, you can get more details and historical trends:• The Timeline tab shows your heart rate each day, with a detailed view for workouts and a special interface to track spikes related to stress, diet, or exercise.• The Daily Leaderboard lens in the Timeline tab lets you compete steps with your friends! You can even invite friends who don't own an AppleWatch—this feature is compatible with the built-in iPhone step tracker! • The Metrics tab shows you how your resting heart rate, sleep, and move, exercise, and stand rings are trending over time.• And the new Habits tab lets you find a new healthy habit you'll love, invite a friend to share metrics, and optimize your overall health and fitness.• The "Me" tab lets you build a profile and share your health data with medical researchers, to contribute to studies on abnormal heart rhythms like atrial fibrillation, heart failure, and more. Note: Cardiogram is not a medical device and is currently for research purposes only.Cardiogram displays data from the Health app, including heart rate, steps, Apple Watch activity rings, and sleep, in chart or graph format, and lets you compare and compete with other users.What's your heart telling you?