Kardia works with the FDA-cleared KardiaMobile or KardiaBand ECG devices— the most clinically-validated mobile EKG solution on the market.

Just touch the sensors on your Kardia EKG device for 30 seconds to capture a medical-grade EKG anytime, anywhere - no probes or wires necessary. Get an immediate result from Kardia's Instant Analysis of Normal, Possible AF, or Unclassified. Additionally you can choose to send the recording to your physician or to one of our partners for a paid Clinician Review. (Clinician review available in U.S., U.K., Ireland, and Australia only).

SmartRhythm workout monitoring is a system that takes your heart rate and activity data gathered from the Apple Watch during workouts, and evaluates it using a deep neural network to predict your heart rate pattern. If your heart rate differs from the neural network prediction, SmartRhythm will notify you to record an EKG with your KardiaMobile or KardiaBand. Kardia integrates with Apple Health to monitor users heart rate during workout.

New U.S. accounts will have their first EKG sent to our partners for review by a U.S. board-certified cardiologist free of charge (a $19 value within the app). You will be blocked for up to 24 hours from EKG features until the review is complete. This will only happen with your first EKG, all future EKGs on your account will give you a Kardia Instant Analysis, and allow you to review your EKG immediately.

The Kardia app, paired with Kardia Mobile, is recommended by leading cardiologists and used by people around the world for accurate electrocardiogram (ECG or EKG) recordings.Record your heart health data with the medical accuracy your doctor can trust.

NOTE: Requires KardiaMobile or KardiaBand hardware to record an ECG

What's New

Version 5.1.1

Addresses issues with login and forgot passwords, along with other minor bug fixes.

Ratings and Reviews

4.7 out of 5

4.2K Ratings

4.2K Ratings

A True Personal Health Tool

Crack a Book

I was having heart palpitations and brief rapid heart rate episodes lasting any where from minutes to hours. I went through the regular cardiac tests..... stress test, blood work, EKG, echo, and 48 hour mobile heart monitoring. The palpitations and rapid heart rate did not surface during these test. How discouraging, because my symptoms were real but not solid proof. My cardiologist was concerned but not convinced there could be a problem. I mean after all doctors work with concrete facts.
I remembered I had a Kardia, AliveCor Mobile EKG which I had purchased a year or so before these symptoms to help with my mother's heart tracking.
I started monitoring my palpitations with the view to sharing the results with my doc. I also used the device when I started to have longer rapid heart rate episodes which were sporadic and usually occurred when the Doc's office was closed. (Who can run to the doctor at a moments notice and get in? Not me) Bingo! Proof that my symptoms were real. I printed out the EKG records I had taken with my Kardia, faxed them to my cardiologist, and received a call the same day with the diagnosis of Afib. I truly believe a correct diagnosis came about faster, without a possible emergency room visit, and in the comfort/safely at home only because of this fabulous device and easy to use app. For under a hundred dollars it's the BEST investment in my and my family's health I have made.

Works but renders all other apps useless


I am updating my review to 4 Stars after hearing back from Kardia. It looks like they are doing the best they can with the watch OS and until Apple provides an OS that permits apps such as Kardia to run in the background we will have to live with it as is. The following is their very reasoned response: Thank you for your feedback and we are looking in to every avenue possible to make this experience better. To be able to gather your heart rate at the required rate, the application is forced to operate as a Workout mode by the platform, and Workout modes are forced to the front of the watch face. There is currently no way around this limitation, but we will happily make the change once the platform allows it. We’ve tried to make this as unobtrusive as possible by adding the time and date to our own screen, but understand that it may not be what you prefer.

ORIGINAL REVIEW: I reported this issue some weeks ago and was assured it would be fixed in an upcoming update but we are still waiting.

Meanwhile we essentially don’t have a watch dial on arm raise or a working sleep app to name just two major issues caused by this application’s frontal focus.

Then there is battery drain. Because the app monitors pulse 24/7 the watch requires recharge twice daily.

I appreciate what it does, but it should be smart enough to accomplish its task without expensing every other watch app and placing such a heavy battery drain.

Poor customer service


The watch band was a Christmas gift and I installed this app the day after Christmas. The very first thing I noticed was only 8 days left in my trial period, they advertised a 30 day trial.
About me, my heart function due several heart attacks and ultimate quad bypass surgery. Every EKG done on my heart SHOWS AS ABNORMAL DUE TO THE DAMAGE. Every ekg done with the app shows a normal result which was very suspicious.
I contacted support twice asking about the accuracy of their app, each time i was referred to my doctor. My doctor has nothing to do with your app or Apple Watch band.
In my opinion if in fact this was an ekg done on my heart it should have at least show that my heart is in fact damaged but the app always says normal which leaves me to believe only normal is all the app is capable of displaying. Normal is NOT a word associated with my heart owing that my heart function is less than %30. My heart damage is caused by exposure to agent orange while is south vietnam.
Now the trial period, in my opinion the trial period should start when the watch and app are installed not when the bans was purchased. As stated i had a 7 day trial, not near enough time for a fair or valid assessment of the app or watch band. If the app and band are even close to accurate it would show an abnormal EKG. THIS SYSTEM IS DANGEROUS and not very well thought out. And once more 7 days not near enough time for a proper evaluation .
Dewey Pollock in central Florida


AliveCor, Inc.
108.5 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Dutch, French, German, Italian, Norwegian Bokmål, Spanish
Age Rating
Rated 4+
© Copyright 2017 AliveCor, Inc. All Rights Reserved. US Patent No: 8,301,232 and Patents Pending. AliveCor is a registered trademark of AliveCor, Inc. in the United States and other countries.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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