Your Apple Watch measures your heart rate every five minutes—Cardiogram tells you what that data means. We help you understand health, sleep, stress, and fitness.

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 that shows minutes in each heart rate zone, 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 and activity levels with your friends! You can even invite friends who don't own an Apple Watch—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 activity rings are trending over time.
• The new Habits tab lets you find a new healthy habit or activity 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 with other users and compete with your friends. Cardiogram is compatible with all Apple Watch models, including Apple Watch Series 1, Apple Watch Series 2, and Apple Watch Series 3. Cardiogram is free.

What's your heart telling you?

What's New

Version 2.8.13

Updates in Cardiogram 2.8.13:
• Some of you have reported issues with getting stuck on the login screen. This is now fixed!
• Also, data syncing issues have been fixed. Heart rate data should be syncing much faster now.
• Sorry for the inconvenience in the last couple of days!
• Please email us at if you're still experiencing issues. Thank you.

Customer Reviews

4.5 out of 5

39 Ratings

39 Ratings

Un app valida


Da avere su ogni iPhone Apple Watch per tenere sotto controllo il proprio cuore

Fantastica app


App molto completa ma al tempo stesso molto semplice.
Una buona lezione anche per Apple che può trarre molti spunti.

Ottima app


App Ben fatta sua dal punto di vista delle funzionalità che per l’interfaccia semplice ed intuitiva.


Cardiogram Inc.
55.2 MB
Health & Fitness
Requires iOS 9.3 or later. Compatible with iPhone and iPod touch.
Age Rating
Rated 12+ for the following:
Infrequent/Mild Medical/Treatment Information
© 2018 Cardiogram Inc


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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