QALY | ECG Reader 17+

Your ECGs, Read by Experts

QALY, Inc.

    • 4.6 • 300 Ratings
    • Free

iPhone Screenshots


Irregular heartbeat? Inconclusive ECG?

On QALY, get your ECGs read by experts within minutes.

All ECGs analyzed by certified cardiographic technicians - trained and certified to read ECGs for palpitations and abnormal heart rhythms like Afib, SVT, PVC, PAC, PR Interval, QT Interval, and more.

Join 100K+ heart heroes signed-up with QALY, the only app where human experts analyze ECGs from your Apple Watch, Fitbit Watch, Withings Watch, KardiaMobile, or any other device within minutes, day or night.

QALY is built by Stanford engineers and physicians, including Dr. Marco Perez, Stanford Associate Professor of Medicine and Stanford Clinical Cardiac Electrophysiologist.


QALY members stay heart healthy:

“I would like to thank everyone reading the ECGs on QALY. Because of QALY, I went to my doctor and was diagnosed with SVT and was told it was probably never an anxiety disorder. I have lived 15 years of hell thinking I was having intermittent panic attacks and agoraphobia. Getting set up for an ablation. I will be forever grateful.”

— Marcie D. from Alabama

“QALY was so helpful in quickly identifying signs of a potentially serious heart condition … Without QALY, I would have blown off the ECG and maybe shown it to my primary care doctor at my next appointment a few months away.”

— Lori B. from Virginia

“My Apple Watch categorizes my arrhythmia as normal or inconclusive, which makes me question what I’m feeling. Without QALY, it would’ve taken me another 6 months to a year to take this to a doctor. With QALY, I gained valuable information. QALY is the key.”

— Jessi I. from Washington


QALY members get peace of mind:

• ECG analyzer for all watches and devices: Apple Watch ECG, Fitbit ECG, Kardia ECG, Wellue ECG, Withings ECG, holter monitors, and more.
• Inconclusive Apple Watch ECGs, Inconclusive Fitbit ECGs, Unclassified KardiaMobile ECGs, and all other Inconclusive ECGs analyzed within minutes for clarity.
• See irregular heartbeats like PAC and PVC on your ECG, analyzed by an expert ECG reader.
• See your PR Interval, QRS Interval, and QTc Interval on your ECG, also analyzed by an expert EKG reader.
• Get more from QALY technician interpretations than your typical ECG analyzer app or HRV tracker: QALY is the only ECG interpreter app where human experts interpret your ECG within minutes.
• Share QALY reports with your doctor, cardiologist, or electrophysiologist.


The QALY app displays ECG data by integrating with the Health app. This is not available on the iPad.

Disclaimer: QALY does not practice medicine or provide medical services. The QALY application and service is only for general informational and educational purposes and is in no way intended to, or be relied upon to replace or constitute professional medical care or attention by a qualified healthcare provider. The information about health provided by the QALY application and service is not intended to diagnose, treat, cure or prevent disease. IF YOU THINK YOU HAVE A MEDICAL EMERGENCY, CALL YOUR DOCTOR OR 911 IMMEDIATELY. DO NOT RELY ON ELECTRONIC COMMUNICATIONS OR COMMUNICATION THROUGH THE QALY APPLICATION FOR IMMEDIATE, URGENT MEDICAL NEEDS. THE COMPANY SERVICE IS NOT DESIGNED OR INTENDED TO FACILITATE MEDICAL EMERGENCIES.

What’s New

Version 2.6.26

We're thrilled to share what's been cooking in our latest update:

- Sign Up with Ease: We've given our sign-up process a makeover, making it a smooth and welcoming first step into our app family.
- Crystal Clear Instructions: We've polished our texts to ensure every word on the screen is as clear and friendly as possible.
- ECG Removal Glitch Be Gone: That irritating little bug that hassled ECG removal? It's history.

We're all about making your experience better with each update. If you ever want to chat or need a helping hand, drop us a line at – we're here to help!

Ratings and Reviews

4.6 out of 5
300 Ratings

300 Ratings

necklacebabe ,

Look no further if using the ECG of Apple Watch

I have had arrythmias most of my adult life. When I heard the Apple Watch 6 had the capability of recording and interpreting the ECGs I switched from my Samsung Galaxy watch to Apple. Over a two week stretch the watch said that I had had over 45 episodes of Atrial Fibrillation. I was so concerned I sent some of these strips to my cardiologist who them told me that they weren't. Because I didn't want to worry nor wonder if indeed I was in AFIB, I looked for an app that used real technicians and not an algorithm to read the ECGs. Luckily, ReadMyECG was at the right time for me . Now, instead of bothering my Dr this app receives the watches report and ECG Strip and if I choose to have them interpret the ECG, they do it within 24 hrs of sending it to them. The technicians have debunked all but 4 of the 81 reports of AFIB. This app also tells me what is specifically happening with my rythym. I've gotten a great education in so far as I'm not nervous anymore with what's going on with my heart's rhythm. The other beauty of this app is that it is so easy to use, a child can do it. The new update goes beyond expectations. It is elegant and beautifully arranged. Bravo to READMYECG. Definitely worth the money!!

MSM713 ,

Best peace of mind for your❤️

Out of nowhere I started having V-tachs. After 10 days in the hospital, every heart test imaginable, and hearing life threatening, catastrophic in sentences, I had a cardiac ventricular ablation. I was freaked and every little weird heartbeat sent me into a panic. At first I’d send my Apple Watch ECG to my EP doctor but then I felt silly as he’d need to reassure me what was going on. ReadMyECG gave me back some control letting me know what my weird beats were, stating if they were within a normal range and giving me some much needed information about my heart. Recently I had an appointment with my cardiologist and showed her some of my reviews from ReadMyECG. She agreed with the reviews and for what I was using it for. Peace of mind obtained. I owe this app so much! I’d encourage you to try it out for 1 month. The cost is nothing given the fear I lived with not knowing and the peace I gained! ALSO, the owners are always upgrading it making it better and more useful. I’m hopeful I won’t need to use it due to my heart issues subsiding, until then THANK YOU ReadMyECG!!!

Cassidyydissac ,

Life saving

There’s little time in the medical field even though every patient is important. And time with providers, costs money. The more time you need with a doctor(s), the more expensive it is. The less time you spend = more money saved. This app helps me spend less time and save more money. Heart holster monitoring is expensive without insurance and I can send one of my watch recordings that was tech reviewed on this app to my cardiologist when I’m worried about something. This app helps me differ when a flutter in my chest is something more serious or just a flutter I don’t need to be scared about. It can offer great ease of mind to someone with a heart condition. But also, please talk to your doctor before using this app. It could cause unneeded anxiety if you’re monitoring something that doesn’t need to be monitored. Technology is awesome. But don’t let it consume you.

App Privacy

The developer, QALY, 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 Linked to You

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

  • Health & Fitness
  • Financial Info
  • Contact Info
  • 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, for example, based on the features you use or your age. Learn More


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