Comparison

Qaly | ECG Reader vs KardiaComplete

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Qaly | ECG Reader

Get your ECGs analyzed by certified experts within minutes for peace of mind. This app supports various devices like Apple Watch and Fitbit, offering detailed interpretations of palpitations and abnormal heart rhythms. Track heart rate variability to monitor stress and recovery.

Highlights
  • Expert ECG interpretation
  • Supports Apple Watch, Fitbit, Kardia, and more
  • Analysis of 30+ heart rhythms
  • Heart rate variability (HRV) tracking
  • Shareable reports for doctors
  • Integration with Health app
Features
Read full description

Heart feels off? Inconclusive ECG? Get your ECGs read by certified experts within minutes, for peace of mind. 500,000+ ECGs read so far. Qaly is the leading ECG app for Apple Watch, Fitbit, Kardia, and other devices. On the Qaly app, get your ECGs reviewed by certified cardiographic technicians, trained to read ECGs for 30+ palpitations and abnormal heart rhythms like Afib, SVT, PVC, PAC, short or prolonged PR interval, short or long QT interval, WPW, and more. Track your heart rate variability (HRV) to monitor stress and recovery. The Qaly app (formerly ReadMyECG) is built by Stanford cardiologists and engineers, including Dr. Marco Perez, a Stanford Associate Professor of Medicine and Stanford Cardiac Electrophysiologist. Join 200K+ heart heroes signed-up with the Qaly app today, the only app where human experts analyze and interpret ECGs from your Apple Watch, Fitbit Watch, Withings Watch, KardiaMobile, WHOOP, Garmin or any other device within minutes, day or night. ---- 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, WHOOP ECG, Garmin ECG, holter monitors, and more. • Borderline ECG, Inconclusive Apple Watch ECG, Inconclusive Fitbit ECG, Unclassified KardiaMobile EKG, WHOOP ECG, Garmin ECG, 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 interpretation app where human experts provide professional analysis of your heart readings 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. ---- The electrocardiogram (ECG/EKG) functionality utilized by this app, available through Apple Watch and Withings devices, is accessible in regions where relevant regulatory clearances—such as FDA clearance, CE marking, UKCA marking, TGA approval, and Health Canada approval—are recognized and in effect.

About

KardiaComplete

This app connects you with a virtual care team for personalized heart health management. Track EKGs and blood pressure, complete program tasks, and access educational content from Mayo Clinic. Share your data with clinicians for comprehensive care.

Highlights
  • Live video chat with cardiologists
  • Direct messaging with health coaches
  • 24/7 virtual digital assistant
  • Weekly program tasks
  • Personalized habit logging
  • View and share heart data
  • Mayo Clinic educational content
Read full description

The KardiaComplete app provides access to the KardiaComplete program and works alongside AliveCor’s #1 patient preferred, FDA-cleared personal EKG, the KardiaMobile® 6L, and the OMRON® Evolv® Blood Pressure Monitor, to help you track changes in your heart. NOTE: The KardiaComplete app is only available in the U.S. to eligible individuals enrolled in the KardiaComplete program through their employer or health plan. With the KardiaComplete app you can: CONNECT WITH YOUR CARE TEAM Video chat live with board-certified cardiologists licensed in your state and heart health coaches Direct message with your heart health coach Ask the 24/7 virtual digital assistant, AskKardiaTM *, questions about heart health ACHIEVE YOUR HEART PROGRAM GOALS Complete weekly program tasks, including recording your EKG or blood pressure Learn about how to care for your heart via educational lessons tailored to your condition, with licensed health information content from the Mayo Clinic Log habits personalized to your heart health goals by your coach VIEW AND SHARE YOUR HEART DATA View your program progress, blood pressures, EKGs, and cardiology after-visit reports at any time Share any of your heart data with clinicians or caregivers via exportable summary reports KardiaComplete is provided to assist you and your clinician with your medical care and is not a replacement for consulting with your clinician. Kardia does not check for heart attack. If you believe you are having a medical emergency, call 911. *AskKardia does NOT give medical advice. About AliveCor AliveCor’s mission is to save lives and transform cardiology by delivering intelligent, highly-personalized heart data to clinicians and patients anytime, anywhere. AliveCor's clinically-validated Kardia devices and software are FDA-cleared to detect 6 of the most common heart rhythm conditions and are highly recommended by clinicians and patients. Kardia is the first AI-enabled platform to aid patients and clinicians in the detection of atrial fibrillation, the most common arrhythmia and one associated with a highly-elevated risk of stroke. AliveCor protects its customers with stringent data security and compliance practices, achieving HIPAA compliance and SOC2 Type 1 and Type 2 attestations. AliveCor is a privately-held company headquartered in Mountain View, Calif. For more information, visit alivecor.com. Kardia integrates with Apple Health to create a combined view of your health metrics. NOTE: This app requires KardiaMobile 6L hardware to record an EKG. FDA 510(k) numbers: K191406, K181823, K201985, ​​K210753, K183319

Screenshots

Qaly | ECG Reader4 screens
KardiaComplete4 screens

Verdict

The call

Qaly | ECG Reader and KardiaComplete both sit at 4.7 stars, but that hides the real split: 76% of Qaly | ECG Reader's written reviews are positive against 33% of KardiaComplete's. Qaly | ECG Reader also leads on update cadence (fortnightly vs every 2 months) and ratings volume (861 vs 120). KardiaComplete's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.6). On price, rating, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Qaly | ECG Reader against 4.6 for KardiaComplete. That said, the two scores are not equally well evidenced: Qaly | ECG Reader has 861 ratings behind it against 120, so its average is the more settled of the two. Written reviews are what separate them: 76% of Qaly | ECG Reader's written reviews are positive against 33% of KardiaComplete's.

UpkeepUpdate frequency

Qaly | ECG Reader ships an update fortnightly, KardiaComplete every 2 months. The most recent releases landed on September 22, 2026 and August 1, 2026 respectively.

Scorecard5 real differences · 5 level
Qaly | ECG Reader versus KardiaComplete: the parameters behind the verdict, then further details
ParameterQaly | ECG ReaderKardiaComplete
PriceFreeFree
Rating4.7 (861 ratings) — better4.6 (120 ratings)
Positive reviews75.8% of reviews — better33.3% of reviews
Number of ratings861 — better120
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.615.6 — better
Further details — not scored
Size96 MB324 MB
Age rating17+12+
DeveloperQaly, Inc.AliveCor, Inc.

Customer experience

Qaly | ECG Reader

All ratings861 ratings
Positive92.8%
Neutral1.3%
Negative5.9%
Written reviews231 reviews
Positive75.8%
Neutral4.3%
Negative19.9%

KardiaComplete

All ratings120 ratings
Positive94.2%
Neutral0.0%
Negative5.8%
Written reviews9 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Bugs and requests

Qaly | ECG Reader

Reported bugs

3 issues
  • App crashes on launch
  • Issues deleting account and data
  • Subscription charges not stopping after cancellation

Requested features

4 requests
  • Dark mode option
  • Ability to view past ECG history
  • Integration with more wearable devices
  • Option to request a specific technician review

KardiaComplete

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Qaly | ECG Reader

No in-app purchases

None

KardiaComplete

No in-app purchases

Questions

Is Qaly | ECG Reader free?
Qaly | ECG Reader is free to download, with no in-app purchases.
Is KardiaComplete free?
KardiaComplete is free to download, with no in-app purchases.
Which has better reviews, Qaly | ECG Reader or KardiaComplete?
Qaly | ECG Reader is rated higher. Qaly | ECG Reader averages 4.7 out of 5 from 861 ratings, while KardiaComplete averages 4.6 from 120 ratings.
Do Qaly | ECG Reader or KardiaComplete have ads?
Neither Qaly | ECG Reader nor KardiaComplete shows ads.
Which is updated more often, Qaly | ECG Reader or KardiaComplete?
Qaly | ECG Reader ships an update fortnightly, and KardiaComplete every 2 months. Most recently, Qaly | ECG Reader was updated on September 22, 2026 and KardiaComplete on August 1, 2026.

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