Qaly | ECG Reader vs ECG247
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
ECG247
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ECG247 Smart Heart Sensor is a medically certified sensor for assessment of heart rhythm disorders. The system is intended for use in the professional health service or for self-testing. ECG247 consists of a reusable sensor, a disposable electrode patch, the ECG247 app and a secure cloud storage service with web access. The ECG247 app must be used with an ECG247 sensor. ECG247 is easy to use and monitors the heart rhythm 24 hours a day for up to 7 days. Any arrhythmias are automatically categorized and classified with high diagnostic precision. ECG247 detects all common heart rhythm disorders. In the event of a possible finding, it is recommended to contact a doctor or relevant health service for further investigation and possible treatment. Read more and order ECG247 at www.ecg247.com Manufacturer: Appsens AS Senterveien 30 4790 Lillesand Norway post@ecg247.com
Screenshots
Verdict
The clearest difference is update cadence: Qaly | ECG Reader at every 2 weeks against ECG247's every 2 months. ECG247's advantage is iOS requirement (13.0 vs 17.6). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Qaly | ECG Reader ships an update every 2 weeks, ECG247 every 2 months. The most recent releases landed on October 22, 2026 and October 13, 2026 respectively.
| Parameter | Qaly | ECG Reader | ECG247 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (871 ratings) — better | — |
| Positive reviews | 74.8% of reviews | — |
| Number of ratings | 871 — better | — |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 94 MB | 54 MB |
| Age rating | 17+ | 12+ |
| Developer | Qaly, Inc. | Apphuset |
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
ECG247
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Qaly | ECG Reader
No in-app purchases
ECG247
No in-app purchases







