Comparison

Qaly | ECG Reader vs HeartScan

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

HeartScan

This app uses your phone's sensors to visualize your heart's mechanical activity, offering insights into pulse, rhythm, and recovery. It provides detailed cardio-wave views and generates doctor-ready reports, all while keeping your data private on your device.

Highlights
  • Instant pulse and rhythm check
  • Cardio-wave viewer
  • Heart rate variability (HRV) snapshot
  • Session history tracking
  • Doctor-ready PDF export
  • AI-powered seismocardiography
Read full description

Meet HeartScan — the first phone‑only heart‑rate monitor that shows what your smartwatch can’t. Lay back, place the iPhone on your chest, hold still for 60 s. HeartScan turns micro‑vibrations into a real‑time cardio‑wave so you can see every beat, not just count it. Why people use HeartScan • Instant pulse & rhythm check — reassurance for skipped beats, palpitations, post‑COVID tachy.* • Training insight — athletes visualise stroke‑volume trends between VO₂ sessions. • Recovery tracking — post‑MI patients watch mechanical strength rebuild day by day. • Doctor‑ready PDF — export a clean report that cardiologists understand. Key features ▸ Accurate heart‑rate (BPM) powered by AI + seismocardiography (SCG) ▸ Cardio‑wave viewer — see each systole & diastole in motion ▸ HrV snapshot — variability graph for stress insight ▸ Session history — compare today vs last month ▸ PDF & CSV export — share or archive your data ▸ Works on any iPhone 8+ — no camera flash, no extra hardware How it works Lie flat on a sofa or bed. Open HeartScan and hit Start. Place the phone mid‑sternum or apical region. Breathe normally for one minute. Review BPM, wave, rhythm and HRV. Behind the scenes, our neural model filters out breathing, muscle artefacts and noise to estimate mechanical systole — something optical PPG and single‑lead ECG can’t do. Privacy first All recordings stay on your device unless you tap ‘Export’. No third‑party analytics. Read the full policy: heartscan.app/privacy Wellness disclaimer HeartScan is not a medical device. It does not detect arrhythmia, diagnose disease or replace professional advice. Always consult a physician if you have health concerns. Palpitation Panic Loop insight: 76 % of Reddit users said “seeing the wave calm down” reduces anxiety — that’s exactly what HeartScan delivers. Get started free Download now and join 100 000+ people who can finally see their heartbeat. Disclaimer: The app is not intended for medical use. This app is not medical software. This app is not a medical device. The app is designed to be used by adults. The app should not be used by a person with a pacemaker. The app does not provide medical or related advice. The information, including but not limited to, text, graphics, images, and other, material contained on the app is for informational purposes only. No material on this app is intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician, cardiologist, or another qualified healthcare provider with any questions you may have regarding a medical condition or treatment, and never disregard professional medical advice or delay in seeking it because of something you have read on the app. Do not use the app as a substitute for treatment or professional advice.

Screenshots

Qaly | ECG Reader4 screens
HeartScan4 screens

Verdict

The call

The clearest difference is review sentiment: Qaly | ECG Reader at 76% against HeartScan's 32%. Qaly | ECG Reader also leads on rating (4.7 vs 3.6) and in-app purchases (none vs 3). HeartScan's advantage is iOS requirement (13.0 vs 17.6). On price, update cadence and device support 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. HeartScan sells 3 in-app purchases, starting at $19.99 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 3.6. That said, the two scores are not equally well evidenced: Qaly | ECG Reader has 861 ratings behind it against 50, so its average is the more settled of the two. Written reviews point the same way: 76% of Qaly | ECG Reader's written reviews are positive against 32% of HeartScan's.

UpkeepUpdate frequency

Qaly | ECG Reader ships an update fortnightly, HeartScan every 3 weeks. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

Scorecard7 real differences · 3 level
Qaly | ECG Reader versus HeartScan: the parameters behind the verdict, then further details
ParameterQaly | ECG ReaderHeartScan
PriceFreeFree
Rating4.7 (861 ratings) — better3.6 (50 ratings)
Positive reviews75.8% of reviews — better31.6% of reviews
Number of ratings861 — better50
Update frequencyFortnightly — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size96 MB85 MB
Age rating17+4+
DeveloperQaly, Inc.BLATT sp. z o.o.

Customer experience

Qaly | ECG Reader

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

HeartScan

All ratings48 ratings
Positive58.3%
Neutral12.5%
Negative29.2%
Written reviews19 reviews
Positive31.6%
Neutral15.8%
Negative52.6%

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

HeartScan

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Qaly | ECG Reader

No in-app purchases

3 purchases

HeartScan

Subscriptions3
  • HeartScan Pro$19.991 Month
  • HeartScan Pro3 Days trial$19.991 Month
  • HeartScan Pro: 6-Months$79.996 Months

Questions

Is Qaly | ECG Reader free?
Qaly | ECG Reader is free to download, with no in-app purchases.
Is HeartScan free?
HeartScan is free to download, with in-app purchases available.
Which has better reviews, Qaly | ECG Reader or HeartScan?
Qaly | ECG Reader is rated higher. Qaly | ECG Reader averages 4.7 out of 5 from 861 ratings, while HeartScan averages 3.6 from 50 ratings.
Do Qaly | ECG Reader or HeartScan have ads?
HeartScan shows ads; Qaly | ECG Reader does not.
Which is updated more often, Qaly | ECG Reader or HeartScan?
Qaly | ECG Reader ships an update fortnightly, and HeartScan every 3 weeks. Most recently, Qaly | ECG Reader was updated on September 22, 2026 and HeartScan on September 21, 2026.

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