Comparison

Qaly | ECG Reader vs Empirical Health

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

Empirical Health

This app analyzes your Apple Watch data and blood test results to provide insights into your heart health. It helps you understand and manage risks related to cholesterol, blood pressure, and other vital metrics. Receive personalized care plans and nutritional analysis to optimize your well-being.

Highlights
  • Apple Watch health reports
  • Advanced heart health blood tests
  • POTS tracking
  • VO2 max boosting
  • Blood pressure management
  • AI nutrition tracker
  • Personalized care plans
Features
Read full description

80% of heart disease is in your control. Empirical combines dozens of biomarkers from your Apple Watch and an advanced blood test to help you optimize your heart health. We summarize all Apple Watch vitals--the heart rate monitor, sleep, VO2 max (cardio fitness), ECGs (electro cardiogram), mental health, HRV, oxygen, blood pressure alerts, and more--into a daily health reports. Our advanced heart health blood test measures ApoB, Lp(a), hs-CRP (inflammation), eGFR, HDL cholesterol, LDL cholesterol, and more. Then, use your data to create a detailed plan to reduce your risk of heart disease: * Cut cholesterol and blood pressure * Boost VO2 max (Apple Watch cardio fitness) * Track nutrition, including calories. Here are the major features of Empirical Health. METRICS: APPLE WATCH HEALTH REPORTS Summarize your Apple Watch vitals into an instant health report. Metrics summarizes 40+ biomarkers into one health score, including resting heart rate, heart rate recovery (cardio recovery), ECGs (electro cardiograms), irregular rhythm notifications, heart attack risk (based on the American College of Cardiology's heart attack risk calculator), HDL cholesterol, LDL cholesterol, ApoB, LP(a), sleep duration, sleep onset, deep sleep, REM sleep, sleep apnea risk, breathing disturbances, oxygen saturation (SpO2), respiratory rate, and VO2 Max (cardio fitness), HRV, temperature, depression, and anxiety. Keep a pulse on your health! REAL MEDICAL CARE FROM REAL DOCTORS Get real medical care from real doctors. Medical care is available in 30+ US states. Our doctors can order labs (e.g., blood tests), imaging, and prescriptions if medically necessary. HEART RATE MONITOR & PULSE TRACKER Track your heart rate (pulse), sleep stages, workouts, and journal your symptoms. Use Empirical as a POTS tracker, overall health monitor, and heart analyzer. The today screen gives you a high resolution heart rate (cardiogram), daily deep/REM sleep, and a customized symptom tracker with tags. AI NUTRITION TRACKER Just upload a photo of your meal, and we'll analyze it for fiber, saturated fat, potassium, sodium, calories, macros, and more. Use us as a cal AI alternative. CARE PLANS for HEART HEALTH, SLEEP APNEA, BLOOD PRESSURE, CHOLESTEROL,, MENTAL HEALTH, and MORE Manage hypertension (high blood pressure), lower cholesterol, and take ECGs (electro cardiograms). CHOP protocol. ABOUT EMPIRICAL HEALTH Empirical Health's mission is to prevent one million heart attacks. We're founded by a doctor and an engineer who previously worked at UC San Francisco, Google, Kaiser, Cardiogram, the HealthCare.gov rescue team, and more. COMPATIBLE APPS & APPLE WATCH SENSORS We're compatible with Apple Watch, Apple Watch SE, and Apple Watch Ultra, and can also import and analyze data from third party sleep, health, and fitness apps such as Autosleep, Athlytic, Bright, Cardiogram (HeartIQ / MigraineHQ), SleepWatch, Tachymon, Welltory, Sleep++, Cal AI, Function, Visible, and other heart rate & HRV monitors. Empirical works with all Apple Watch / iwatch health sensors: heart rate monitor (pulse), ECG (electro cardiogram), HRV, blood oxygen saturation, activity, deep sleep, REM sleep, sleep stages, afib history, vo2 max (cardio fitness), heart rate recovery (cardio recovery), temperature, depression and anxiety risk, sleep apnea alerts, breathing disturbances, and more. We also work with blood pressure cuffs that connect with the Apple Health app. Please always check with a doctor in addition to using the app and before making medical decisions. You can talk with a doctor directly in the app in most US states.

Screenshots

Qaly | ECG Reader4 screens
Empirical Health4 screens

Verdict

The call

The clearest difference is review sentiment: Qaly | ECG Reader at 76% against Empirical Health's 33%. Qaly | ECG Reader also leads on in-app purchases (none vs 13) and rating (4.7 vs 4.4). On price, ratings volume, update cadence and ads 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. Empirical Health sells 13 in-app purchases, starting at $5.99 per month. Qaly | ECG Reader asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Qaly | ECG Reader holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 861 and 596 respectively. Written reviews point the same way: 76% of Qaly | ECG Reader's written reviews are positive against 33% of Empirical Health's.

UpkeepUpdate frequency

Qaly | ECG Reader ships an update fortnightly, Empirical Health every 2 weeks. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.

Scorecard4 real differences · 6 level
Qaly | ECG Reader versus Empirical Health: the parameters behind the verdict, then further details
ParameterQaly | ECG ReaderEmpirical Health
PriceFreeFree
Rating4.7 (861 ratings) — better4.4 (596 ratings)
Positive reviews75.8% of reviews — better33.3% of reviews
Number of ratings861 — better596
Update frequencyFortnightly — betterEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS17.616.4 — better
Further details — not scored
Size96 MB135 MB
Age rating17+17+
DeveloperQaly, Inc.Empirical Health, Inc.

Customer experience

Qaly | ECG Reader

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

Empirical Health

All ratings596 ratings
Positive84.9%
Neutral4.5%
Negative10.6%
Written reviews33 reviews
Positive33.3%
Neutral9.1%
Negative57.6%

User reviews

Qaly | ECG Reader

From 861 App Store ratings

What we love

  • 🚀 Quick response times
  • 👍 Helpful and reassuring technicians
  • 💡 Provides peace of mind
  • 👍 Detailed and informative ECG analysis
  • 👍 Easy to use app

Room to improve

  • 🐛 Inconsistent ECG analysis
  • 🔍 Lack of transparency around pricing
  • 🔍 Difficult to cancel subscription
  • 🕰️ Long wait times for ECG reviews
  • 🔍 Requires access to Apple Health data

Empirical Health

From 596 App Store ratings

What we love

  • 👍 Helpful information on watch
  • 👍 Good source of key data
  • 👍 Excellent and intuitive
  • 👍 Great app for heart health
  • 👍 Actionable health app

Room to improve

  • 👎 Terrible app and support
  • 👎 Inscrutable interface
  • 👎 No support
  • 👎 Not worth the spend
  • 👎 Simplistic, no more data than Apple Health

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

Empirical Health

Reported bugs

9 issues
  • Apple Watch not fully functional
  • Sleep data inaccurate compared to other apps
  • Scrolling issues
  • App freezes when scrolling
  • Page freezes when trying to scroll
Show 4 more
  • App is laggy and unresponsive
  • Claimed HRV is incorrect
  • Does not sync with Apple Health for some data
  • Downloading leads to payment, not onboarding

Requested features

8 requests
  • Family share option
  • Low and high heart rate alarms
  • Better Shortcuts app capabilities for logging
  • Symptom tracker
  • Ability to customize base pace and heart rate zones
Show 3 more
  • Option to download reports easily
  • More explanations for notices
  • Focus on fewer features and make them good

In-app purchases

None

Qaly | ECG Reader

No in-app purchases

13 purchases

Empirical Health

Subscriptions13
  • Empirical Pro7 Days trial$5.991 Month
  • Empirical Subscription$9.001 Month
  • Empirical Pro (monthly)7 Days trial$9.001 Month
Show 10 more
  • Text Based Care$20.001 Month
  • Empirical Pro - $24.99 / year7 Days trial$24.991 Year
  • Empirical Pro7 Days trial$25.003 Months
  • Empirical Pro7 Days trial$49.006 Months
  • Empirical Pro - Six Months7 Days trial$54.006 Months
  • Empirical Pro - Annual7 Days trial$56.001 Year
  • Empirical Subscription$84.001 Year
  • Empirical Pro7 Days trial$84.001 Year
  • Empirical Pro w/ doctor visits7 Days trial$124.996 Months
  • Empirical Pro Doctor (1 year)7 Days trial$194.991 Year

Questions

Is Qaly | ECG Reader free?
Qaly | ECG Reader is free to download, with no in-app purchases.
Is Empirical Health free?
Empirical Health is free to download, with in-app purchases available.
Which has better reviews, Qaly | ECG Reader or Empirical Health?
Qaly | ECG Reader is rated higher. Qaly | ECG Reader averages 4.7 out of 5 from 861 ratings, while Empirical Health averages 4.4 from 596 ratings.
Do Qaly | ECG Reader or Empirical Health have ads?
Neither Qaly | ECG Reader nor Empirical Health shows ads.
Which is updated more often, Qaly | ECG Reader or Empirical Health?
Qaly | ECG Reader ships an update fortnightly, and Empirical Health every 2 weeks. Most recently, Qaly | ECG Reader was updated on September 22, 2026 and Empirical Health on September 20, 2026.

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