Cardiogram: Heart Rate Monitor

Cardiogram, Inc.

In-app purchases

About this app

Cardiogram is a heart rate monitor and analyzer that helps you learn what your heart is telling you. Track your pulse and understand your sleep, stress, and cardio fitness through interactive charts, comprehensive metrics, and notes that help track day-to-day fluctuations in your heart health.

Cardiogram goes beyond taking your pulse, it helps you build lifelong habits to manage your heart health and stress to reduce your risk of heart disease. Take control of your goals, whether it’s to lose weight, manage your sleep, or improve your cardio fitness. Cardiogram’s heart analyzer provides insights into your sleep, stress, cardio health, and lifestyle to help monitor your overall heart health with long-term trends to see how building new habits will improve your daily heart rate metrics. Join the cardiogram community to reduce stress and find a new healthy habit or activity you’ll love!

Pulse Monitor & Heart Analyzer
• A digital diary of your heart rate data. Monitor your heart health and see how your pulse changes with interactive, instant heart rate graphs.
• Help you and your doctor monitor your heart health with an instant, comprehensive, breakdown of all your heart health data points with symptoms and mood logging.
• Highlight and make notes on any section of your heart health data to identify what may have caused a spike or dip in your pulse, like stress, diet, or medications.
• Use Cardiogram’s heart analyzer to compare your resting heart rate, steps, and sleep to other Cardiogram users.

Heart Health Report Card
• Track personalized risk scores to monitor how your heart health is changing over time and how different habits or increased stress are affecting your risk for heart attacks and chronic disease.
• Use Cardiogram’s heart analyzer to compare your pulse rate with past days and search through all your labelled heart health data.
• Scores are generated by our clinically-validated ML algorithm using factors such as age, sex, height/weight, and various pulse rate metrics.

WearOS watch app
• View your instant heart rate or use detailed charts as a pulse and stress monitor.
• Monitor your heart rate variability while working out.
• Customize the frequency that Cardiogram monitors your pulse.

ECG and Sleep Tracking
Our app does not have built-in ECG / EKG functionality and does not measure individual heart rates. We retrieve sleep tracking data directly from the Google Fit, Fitbit, or Garmin Connect apps and show this information in the context of your heart rate. We don’t write any data to Google Fit yet, but stay tuned for updates.

Supported Languages
We currently only offer the app in English.

Supported devices with a heart rate monitor
-Fitbit Charge™ family
-Fitbit Versa™ family
-Fitbit Inspire HR™
-Fitbit Ionic
-Fitbit Alta HR
-Fossil Julianna HR, Fossil Carlyle HR, Fossil Sport, Fossil Venture HR, Fossil Explorist HR, Fossil Q series
-Garmin Fenix 5 Series
-Garmin Forerunner 35, 235, 645, 735XT, 935
-Garmin Vivoactive 3
-Huawei Watch 1 and 2
-LG Watch Sport
-Misfit Vapor
-Moto 360 Sport
-New Balance RunIQ
-Polar M600
-Ticwatch S, Ticwatch E, and Ticwatch Pro

Cardiogram is compatible with Wear OS by Google, Fitbit, and Garmin watches with a heart rate sensor. The Cardiogram Wear OS app on your watch works even if you use an iPhone. For Samsung, we are compatible with the 2021 Samsung Galaxy Watch 4 and Samsung Galaxy Watch 4 Classic only.

Ratings and reviews

I have loved this app, and I do pay for the subscription. In recent months, there have been quite a few glitches recording my heart rate and syncing from my watch as well as syncing activities from Google Fit. I contacted Support, and while they provided various suggestions, all of which I tried, the excuse is now the "third-party apps." Sorry, I expect more from a paid app, and if you can't deliver what you advertise, then don't charge for it.

Worked great year one. Since August 2023, App does not track unless manually pushed to do so and only records for that moment. Customer service tried to help, but un successful. Re-installed, restarted, etc., etc., All settings checked for correctness per cardiogram instructions. All good there. Still no auto record...continuing to have problems w/ app. Despite 2 customer service troubleshoots, still does not record or connect , at best intermiitently. Can not recommend.

Just.... No. Installed it on my watch, installed it on my phone, tried to sync them. The minute you hit decline on the "give me money now" page it dumps you back to the sign up page. I even tried to log in thinking maybe it was done. But nope. There is no x to close out of it. You hit decline, and it completely deletes any progress you've made towards signing up. Will be deleting the app off of both devices and never downloading again

What's new

Fixing automatic mode