Heart feels off?

Get your ECG read by certified experts within minutes on the Qaly app.

Download Qaly ECG Reader from the App StoreDownload Qaly ECG Reader from the Play Store
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180,000+ read ECGs so far!
3 days free, cancel any time
QALY - Human experts interpet your ECG (Apple Watch, Samsung, Kardia, Fitbit, and more)
100,000+ heart heroes signed-up with QALY
Life changing and anxiety reducing
By jjc013
Apple logo

This app is a God send. It calms my anxiety and literally helped me sleep the night after my first review. It is reassuring and QUICK. I highly recommend it. THANK YOU!

MAR 18 2020
QALY User Review - ECG Reviews within minutes
Selena Bluntzer
Google Play icon

I am impressed! I received a thorough review of 3 ECGs and the technician was so helpful and friendly in their reporting. I've felt more "heard" by this app's technician than in all the time I spent with other doctors. I will be following up with my doctor, though, and I greatly appreciate this app!

MAR 13 2022
Best peace of mind for your ❤️
By MSM713
Apple Icon - QALY App Store Review

QALY 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. Peace of mind obtained.

APR 10 2022
3 days free, cancel any time
QALY app, palpitations, irregular heartbeats, review ecg in minutes

Cardiac Technicians Available 24/7

Day and night, cardiographic technicians on QALY monitor your ECGs for heart palpitations and arrhythmias such as SVT, AFib, PVC, PAC, and more.

Try Qaly for Free

Automatic PQRST Intervals for Every ECG

Learn about short or prolonged PR, QRS, and QTc intervals. With trends, track your intervals over time. Each value can be checked with our experts.

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QALY app, review ecg in minutes, smartwach ecg, Kardia ECG, ecg interpretation

Deeper Insights into Your Heart Health

Take a watch ECG immediately when you're experiencing symptoms, and capture episodes. Get insights into changes in your heart over time and share reports with your doctor.

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QALY app, ECG reviews, ecg reader, ecg interpreations
3 days free, cancel any time

With the modern availability of at-home devices that can measure ECGs, it is now challenging for cardiologists to keep up with all of these readings. On Qaly, trained ECG technicians read every ECG you submit.  If you want to learn what your ECG may be telling you, this is the place to start.

Dr. Marco Perez

Stanford Associate Professor of Medicine
Stanford Clinical Cardiac Electrophysiologist

Qaly Co-Founder

Macro Perez - Co-founder of ReadMyECG

Frequently Asked Questions

What’s included in the Qaly app?

• Qaly is the ultimate ECG reader app, built by Stanford engineers and cardiologists: 180,000+ ECGs read. Get your ECGs read within minutes.
• With Qaly, get an ECG reader online for all watches and devices: Apple Watch ECG, Samsung ECG, Fitbit ECG, KardiaMobile ECG, Withings ECG, Wellue ECG, holter monitor ECG, and more.
• Qaly's online ECG reader analyzes Inconclusive Apple Watch ECG, Inconclusive Samsung ECG, Inconclusive Fitbit ECG, Unclassified KardiaMobile ECG, and all other Inconclusive ECGs.
• See if your PR Interval, QRS Interval, and QTc Interval is short, normal, or long with Qaly's online ECG interpretation. Apple Watch, Kardia, Samsung, Fitbit, and Withings. Get Qaly's ECG reader online free today, cancel any time.
• ECG interpretation app for SVT ECG, PVC ECG, Bigeminy ECG, and more.
• Get ECG interpretation online for irregular heartbeats and palpitations.
• See irregular heartbeats like PAC and PVC from Qaly's ECG analysis online.
• Get started with Qaly's ECG analysis online free today, cancel any time.
• Get more from Qaly's ECG reading app than your typical ECG analyzer app or ECG scanner app: Qaly is the only ECG app where human experts read your ECG within minutes.
• Upload ECG for interpretation from certified experts on the Qaly app: 180,000+ ECGs interpreted. Built by Stanford cardiologists and engineers.
• Read ECG online with Qaly, then share your Qaly ECG report with your doctor, cardiologist, or electrophysiologist.
• Want a quick ECG report check online? On the Qaly app, get your ECGs checked for weird heartbeats, day or night.
• 180,000+ ECGs analyzed on Qaly's ECG scanner online.
• Get started with Qaly's ECG analysis online free today, cancel any time.
• Join 100,000+ heart heroes on the Qaly app for an ECG report analysis online free today.

Who are the experts reviewing ECGs on Qaly?

Certified cardiographic technicians on the Qaly app can read your ECG.

Qaly technicians are professionals skilled in understanding heart rhythms. They excel at identifying irregularities like SVT, AFib, PVCs, PACs, and more. All Qaly technicians have successfully cleared the CCT exam administered by Cardiovascular Credentialing International, showcasing enhanced competence. Now, they're attentively overseeing your at-home ECGs 24/7 on Qaly.

What rhythms does the Qaly app look for?

Qaly technicians currently monitor for 33 different arrhythmias:

• Complete Heart Block
• Ventricular Tachycardia (sustained)
• Second Degree AV block Type 2
• Sinus Pause >3 seconds
• Ventricular Tachycardia (non-sustained)
• Sinus Pause <3 seconds
• Atrial Fibrillation
• Atrial Flutter
• Supraventricular Tachycardia (sustained)
• 2:1 AV Block
• Accelerated Idioventricular Rhythm
• Supraventricular Tachycardia (non-sustained)
• Wenckebach
• Wolff-Parkinson-White Syndrome
• Ventricular Bigeminy
• Ventricular Trigeminy
• Atrial Bigeminy
• Atrial Trigeminy
• Junctional Rhythm
• Premature Ventricular Contraction (couplet)
• Premature Atrial Contraction (couplet)
• Premature Ventricular Contraction (multiple)
• Premature Atrial Contraction (multiple)
• Premature Ventricular Contraction (single)
• Premature Junctional Contraction
• Ectopic Atrial Rhythm
• Premature Atrial Contraction (single)
• First Degree AV Block
• Sinus Tachycardia
• Sinus Bradycardia
• Sinus Arrhythmia
• Sinus Rhythm
• Paced Rhythm
• Low Voltage

How is Qaly different from other apps?

Qaly is the only app on the App Store and Play Store where human experts interpret each and every ECG you submit, within minutes.

With Qaly, discover possible new cardiac arrhythmias and palpitations, track known arrhythmias and irregular heartbeats, and unlock deeper insights about your heart health through human technician monitoring.

Same-day delivery on unlimited ECG interpretations means getting continual information and peace of mind before the next available doctor’s appointment.

Join 100,000+ heart heroes signed-up with Qaly

Send ECGs from Apple Watch, Samsung Galaxy Watch, Fitbit Sense, Fitbit Charge 5, Withings Move ECG, Withings Scanwatch, Kardia, Wellue, or any other ECG device ❤️

3 days free, cancel any time

Amazing comfort for any one struggling with heart issues.


Best peace of mind for your ❤


Extremely grateful for the person who reviewed my ECG.


To the pros reading my ECGs, thank you!


Life changing!


I looked for an app that uses real technicians, and not an algorithm to read my ECGs. Luckily, Qaly was there at the right time for me.