Cardiogram: Heart Rate Monitor 12+

Pulse Analyzer & Health Mate

Cardiogram, Inc.

    • 4.6 • 1.2K Ratings
    • Free
    • Offers In-App Purchases


Cardiogram is a heart rate monitor and symptom tracker that helps you detect and manage chronic health conditions. See minute-by-minute heart rate information collected by your smartwatch, not just a summary. Set customized heart rate alerts for high and low readings. Use interactive, color-coded charts (with pinch-to-zoom) of your heart rate data, step counts, time-stamped symptoms, and medication.

Search your symptom history to make connections between your symptoms, triggers, medications, how you're feeling, and your heart rate information. Get weekly risk scores for hypertension, sleep apnea, and diabetes.

By connecting Apple Health, Cardiogram will pull in ECG and Blood Pressure readings to have a comprehensive report of your symptoms and readings to share with your doctor. You can also connect a family member to your account so they can see your data.

We take your privacy seriously. We use healthcare-grade encryption and we don't sell your data.

• A digital diary of your heart rate data. See how your pulse changes with interactive, instant heart rate graphs.
• Track your health with a comprehensive breakdown of all your data points with symptoms and mood logging
• Highlight and make notes on any section of your heart health data to identify spikes or dips in your heart rate
• See your trends in Smart Metrics with personalized recommendations for lifestyle changes to improve your scores

• Track unlimited custom symptoms in seconds using time-stamped tags
• Symptoms are connected to your heart rate and step counts
• Customize the symptoms you want to track and group into categories
• Share a report of your symptoms and related heart rate data with your doctor. Your doctor can use this objective history data to speed diagnosis or manage an existing condition
• Download your data into a spreadsheet (CSV format)
• Enrich your data with time-stamped, daily journal entries

Cardiogram receives ECG and blood pressure readings through the Apple Health app.
• If you take an ECG reading using your Apple watch, you can see the results directly within the Cardiogram app and it will be included with your doctor report.
• Using an Apple Health-compatible Bluetooth blood pressure cuff, readings will be imported into the Cardiogram app, connected to that day's data.

• Track personalized risk scores to see how your health is changing over time and how different habits are affecting your risk.
• Scores are generated by our clinically validated AI algorithm using factors such as age, sex, height/weight, and metrics collected from your smart watch.

• We retrieve sleep tracking data directly from the Apple Health, Fitbit, or Garmin Connect apps and show this information in the context of your heart rate.

• View your instant heart rate or view your daily heart rate chart on your wrist
• View your heart rate in real-time while working out
• View daily metrics like resting HR, peak HR, low HR, steps, and sleep BPM

Cardiogram is only available in English at this time.

SUPPORTED DEVICES include smartwatches with a heart rate sensor including:
Any Apple Watch
Garmin Epix, Fenix, Forerunner, Instinct, Venu, Vivoactive, Vivosmart series
Samsung Galaxy Watch 5, Watch 4, Watch 4 Classic
Fitbit Charge, Versa, Sense, Inspire, Luxe Series
Fossil Julianna HR, Carlyle HR, Sport, Venture HR, Explorist HR, Q series
Google Pixel Watch
Huawei Watch 1 and 2
LG Watch Sport
Misfit Vapor
Moto 360 Sport
New Balance RunIQ
Polar M600
Ticwatch S, E, and Pro

Cardiogram is currently a subscription-only service with a 30-day free trial for new users.

Terms of Service:
Privacy Policy:

What’s New

Version 3.7.21

Application improvements and notification styling.

Ratings and Reviews

4.6 out of 5
1.2K Ratings

1.2K Ratings

Hagsishakahd ,

Seems to have really improved from a year ago

When I first got this app back in December 2017, I wasn't impressed. I think almost all the negative reviews on here are from around then. But just tried it again and it now gives me continuous HR for almost full 12 hour day on Series 3 watch before draining the battery (fine for my needs), and doesn't log the monitoring as a workout which most other apps do in order to get continuous HR. Just checked the main app on the phone and it gives lots of extra insights aboht your stats compare to average user of the app. That sealed it for me and pushed me to actually write a review, which I rarely do. Great app and really happy with it!

Developer Response ,

Hi Hagsishakahd! I was going through our older reviews and just wanted to drop by and thank you for taking the time to leave us such a positive review. We're constantly working to make Cardiogram better and it's always amazing to hear that we're making progress. If you have any thoughts on things we can do better, please let me know at Thank you for being one of our early adopters :) ^Linda

Deeply veined ,

It becomes somewhat of an obsession, but in a good way

Just like the heart app on the Apple Watch, this app has found me become very much more engaged with what my heart is up to on a daily and weekly basis. It adds extra layers of info to my burgeoning exercise routines and it’s now a personal challenge to keep lowering my resting heart rate. It’s great when you can relate your daily activities to the peaks and troughs of the heart rate chart. Had shot of espresso? Let’s see what that does. How much did I peak during that bike ride? Maybe I can push a bit harder on tomorrow’s commute. I love this app and I am sure it will only improve with time. I also feel suitably virtuous to be a participant in their worldwide heart health study.

Developer Response ,

Hi Deeply veined! I was going through our older reviews and wanted to thank you for leaving us such a positive review. Our mission is to help users better understand their cardiovascular health and we're glad that seems to have been the case with you. If you have any thoughts about how we can improve, please feel free to reach out to our team at Thank you for being one of our earlier users! We also think you're virtuous for participating :) ^Linda

Smooth Bird ,

Sceptical cardiologist now converted!

My cardiologist was somewhat dismissive of heart rate readings that came from my watch. Then, a few weeks later, he ordered a 7-day, 24-hour monitor for me. After two days I let his office know I’d had symptoms and didn’t see any point in leaving it on for another five. On returning the monitor I also handed over Cardiogram printouts of my heart rate over the same period. When he compared his (very expensive) readings with Cardiogram’s, he said they reflected exactly what I had reported. He even stated in his report letter to my GP that his findings mirrored what I had learned on my watch. Thank you, Cardiogram, for creating such a brilliant app.

Developer Response ,

Hi Smooth Bird, Thank you for taking the time to share your positive experience with us via a review. We genuinely hope that you find Cardiogram to be a valuable tool to use. If you have any trouble with the app or have questions, please don't hesitate to contact us by email. We can be reached at

App Privacy

The developer, Cardiogram, Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers

Data Linked to You

The following data may be collected and linked to your identity:

  • Health & Fitness
  • Contact Info
  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More

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