HeartLab: ECG & Heart Analysis

Name: HeartLab: ECG & Heart Analysis
Rating: 4 (13 reviews)
Author: CEPALabs SH.P.K.

AFib PVC PAC Arrhythmia HRV AI

Free · In‑App Purchases

13 Ratings
Age Rating

13+
Years
Category

Medical
Developer

CEPALabs SH.P.K.
Language

EN
+ 22 More
Size

41.4
MB

Requires an Apple Watch (Series 4+) with the ECG app. HeartLab analyzes the ECGs your Watch records — it doesn't record them itself. Your smartwatch records ECGs. But do you truly understand what they reveal? HeartLab transforms your ECG data into comprehensive cardiac insights that go far beyond what basic health apps show you. Professional-grade analysis, AI-powered explanations, and PDF reports your cardiologist will actually appreciate. ADVANCED ARRHYTHMIA DETECTION While standard ECG apps only detect Atrial Fibrillation (AFib), HeartLab identifies five types of heart rhythm irregularities: • Atrial Fibrillation (AFib) - Irregular heartbeat originating in the atria • Premature Atrial Contractions (PAC) - Early beats from the atria • Premature Ventricular Contractions (PVC) - Early beats from the ventricles • Bigeminy - Alternating pattern of normal and premature beats • Trigeminy - Pattern of two normal beats followed by a premature beat Our algorithms analyze every single heartbeat to find patterns that other apps miss completely. COMPLETE HRV ANALYSIS Get the full picture of your Heart Rate Variability with 12+ professional metrics: • SDNN - Standard deviation of NN intervals, key indicator of overall heart health • rMSSD - Reflects parasympathetic nervous system activity • pNN50 - Percentage of adjacent intervals differing by more than 50ms • Poincaré Plot - Visual representation of heart rate dynamics • Cardiac Score - Our proprietary algorithm combining multiple metrics The same metrics used in professional cardiac research, now accessible on your iPhone. AI-POWERED EXPLANATIONS Don't understand medical terminology? Our AI assistant explains your ECG results in plain language, answers your questions, and helps you understand what your heart data actually means. No more confusion about what those squiggly lines represent. PROFESSIONAL PDF REPORTS Generate detailed medical-grade reports that you can share with your cardiologist. Each report includes: • Complete ECG waveform visualization • All measurements and intervals • HRV metrics and trends • Detected anomalies and patterns • Historical comparison Doctors recognize and trust this format. Many cardiologists now request HeartLab reports during appointments. SEAMLESS INTEGRATION • Automatic ECG import from Apple Health • No manual export or complicated setup • Record your ECG, see analysis in seconds • Complete historical data access • Organized timeline view 100% PRIVACY-FIRST Your ECG data never leaves your iPhone. All analysis is performed locally using advanced algorithms optimized for mobile devices. No cloud processing, no data uploads, no accounts required. Complete privacy, always. DESIGNED FOR EVERYONE Whether you're monitoring a known condition, tracking athletic recovery through HRV, or simply curious about your heart health, HeartLab provides the insights you need in a format you can understand. Trusted by thousands of users in 47+ countries. Join them today. --- Terms of Use: https://www.heartlab.it/terms.html Privacy Policy: https://www.heartlab.it/privacy.html Medical Disclaimer: HeartLab is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease or health condition. The app is for informational and educational purposes only. Always consult a qualified healthcare professional for medical advice, diagnosis, or treatment. In case of a medical emergency, call your local emergency services immediately. ECG analysis requires compatible smartwatch with ECG capability.

Ratings & Reviews

4.0

out of 5

13 Ratings

Seems accurate
Feb 24

josephbarron98
I've been using this for about a month now and tried pretty much every ECG app out there for Apple Watch before landing on this one. This is by far the most complete. The accuracy feels genuinely different from the others, it picks up things that other apps just ignore. The symptom journal combined with the exercise diary is something I haven't seen anywhere else and it actually makes a difference in understanding patterns over time. The free exercises are a nice touch too. Solid app

Developer Response
Thank you, Joseph! It means a lot to hear this from someone who's tested the competition thoroughly. Detecting subtle patterns is exactly what HeartLab is built for, the combination of ECG accuracy, symptom journaling, and exercise tracking is intentional, because heart health rarely tells its full story through readings alone. We're continuously improving the analysis engine, so there's more to come. Stay well! 🫀
Seems accurate
Feb 24

josephbarron98

I've been using this for about a month now and tried pretty much every ECG app out there for Apple Watch before landing on this one. This is by far the most complete. The accuracy feels genuinely different from the others, it picks up things that other apps just ignore. The symptom journal combined with the exercise diary is something I haven't seen anywhere else and it actually makes a difference in understanding patterns over time. The free exercises are a nice touch too. Solid app
Developer Response Feb 25
Thank you, Joseph! It means a lot to hear this from someone who's tested the competition thoroughly. Detecting subtle patterns is exactly what HeartLab is built for, the combination of ECG accuracy, symptom journaling, and exercise tracking is intentional, because heart health rarely tells its full story through readings alone. We're continuously improving the analysis engine, so there's more to come. Stay well! 🫀
All good thanks
Mar 8

Brown Davis78
I have over 5k ecgs accumulated over the past 5 years and still the app works very well

Developer Response
Thank you so much for your feedback! We're really glad to hear that HeartLab is still working well for you even after collecting over 5,000 ECGs over the past 5 years. Your support means a lot to us and motivates us to keep improving the app.
All good thanks
Mar 8

Brown Davis78

I have over 5k ecgs accumulated over the past 5 years and still the app works very well
Developer Response Mar 13
Thank you so much for your feedback! We're really glad to hear that HeartLab is still working well for you even after collecting over 5,000 ECGs over the past 5 years. Your support means a lot to us and motivates us to keep improving the app.
Check ECG+
Apr 22

Webster/2
The developer asked me to be constructive so here is one: RESPECT other apps work, you can get inspired but straight up copyying discredits whatever you are offering… evidence? Look at the 2nd screenshot showing an ecg strip, the navigator with letter R for easy locating beats is nearly identical to ecg+, yeah of course you can change color from red to purple but the way it works is IDENTICAL.In case Apple is checking, compare element by element on the screenshot, even the grayed out text of Apple Watch device info is in the same position.I don’t work for anyone but decent enough to call out dishonesty and unfairness

Developer Response
Edit: the "navigator with R letter" is the standard convention for R-peak annotation used in clinical ECG analysis since the 1960s and across medical-grade devices. The position of Apple Watch device metadata is determined by standard iOS layout patterns. These are not proprietary design choices.Thank you for taking the time to share your thoughts.We take feedback seriously, but we want to clarify that HeartLab is an independently developed product built around its own ECG analysis workflow, AI-assisted interpretation, HRV metrics, and report generation features. Our goal is to help users better understand their heart data, not simply to imitate existing apps.Some visual patterns in ECG applications are naturally similar because they all present the same kind of physiological data, but similarity in how information is displayed does not mean the product or analysis engine was copied. The underlying experience, feature set, and analysis approach in HeartLab are designed from the ground up for our users.If you have specific concerns about any feature or screen, we would be glad to review them directly. Constructive feedback is always welcome, but broad claims of copying without evidence are not helpful to users who are trying to evaluate the app fairly.
Check ECG+
Apr 22

Webster/2

The developer asked me to be constructive so here is one: RESPECT other apps work, you can get inspired but straight up copyying discredits whatever you are offering… evidence? Look at the 2nd screenshot showing an ecg strip, the navigator with letter R for easy locating beats is nearly identical to ecg+, yeah of course you can change color from red to purple but the way it works is IDENTICAL.In case Apple is checking, compare element by element on the screenshot, even the grayed out text of Apple Watch device info is in the same position.I don’t work for anyone but decent enough to call out dishonesty and unfairness
Developer Response Apr 21
Edit: the "navigator with R letter" is the standard convention for R-peak annotation used in clinical ECG analysis since the 1960s and across medical-grade devices. The position of Apple Watch device metadata is determined by standard iOS layout patterns. These are not proprietary design choices.Thank you for taking the time to share your thoughts.We take feedback seriously, but we want to clarify that HeartLab is an independently developed product built around its own ECG analysis workflow, AI-assisted interpretation, HRV metrics, and report generation features. Our goal is to help users better understand their heart data, not simply to imitate existing apps.Some visual patterns in ECG applications are naturally similar because they all present the same kind of physiological data, but similarity in how information is displayed does not mean the product or analysis engine was copied. The underlying experience, feature set, and analysis approach in HeartLab are designed from the ground up for our users.If you have specific concerns about any feature or screen, we would be glad to review them directly. Constructive feedback is always welcome, but broad claims of copying without evidence are not helpful to users who are trying to evaluate the app fairly.
$50 for an AI “invented” app
May 9

Sandstonekol
Not against ai but its crazy so many new AI vibe apps asking this much money for some fancy aka dumb “invented” concept

Developer Response
HeartLab is not an AI gimmick app.It's the work of a team of 13 people, built in collaboration with cardiologists from Italian hospitals who validated every algorithm we use:• Arrhythmia detection (PAC, PVC, AFib, bigeminy, trigeminy)• Full HRV analysis with 12 metrics including SDNN, rMSSD, pNN50, Poincaré• QT and QTc measurement using the Postema tangent method, the clinical standard used in hospitals• Beat Signature analysis and Cardiac Score• Professional PDF reports for your doctorAll of it processed on device. Your ECG data never leaves your phone.The optional AI assistant only ever receives anonymized numerical summaries, never raw ECG data. It's one feature, not the product.Premium costs €49.99 a year, less than a single Holter monitor exam. If you've actually tried the app and have specific feedback, write to hello@heartlab.it. We read and reply to every message.Marta, HeartLab Support
$50 for an AI “invented” app
May 9

Sandstonekol

Not against ai but its crazy so many new AI vibe apps asking this much money for some fancy aka dumb “invented” concept
Developer Response May 11
HeartLab is not an AI gimmick app.It's the work of a team of 13 people, built in collaboration with cardiologists from Italian hospitals who validated every algorithm we use:• Arrhythmia detection (PAC, PVC, AFib, bigeminy, trigeminy)• Full HRV analysis with 12 metrics including SDNN, rMSSD, pNN50, Poincaré• QT and QTc measurement using the Postema tangent method, the clinical standard used in hospitals• Beat Signature analysis and Cardiac Score• Professional PDF reports for your doctorAll of it processed on device. Your ECG data never leaves your phone.The optional AI assistant only ever receives anonymized numerical summaries, never raw ECG data. It's one feature, not the product.Premium costs €49.99 a year, less than a single Holter monitor exam. If you've actually tried the app and have specific feedback, write to hello@heartlab.it. We read and reply to every message.Marta, HeartLab Support

• Refreshed app icon • Improved ECG detail readability • Tap the HRV chart to navigate your ECG trace • Onboarding improvements • Localization updates across supported languages • Various bug fixes and stability improvements Thank you for choosing HeartLab!

Version 1.1.5 May 13

Data Not Linked to You

The following data may be collected but it is not linked to your identity:
- Health & Fitness
- Purchases
- Contact Info
- Identifiers
- Usage Data
- Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Supported Features
- VoiceOver
- Larger Text
- Dark Interface
- Sufficient Contrast

Information

Seller: CEPALabs SH.P.K.
Size: 41.4 MB
Category: Medical
Compatibility: Requires iOS 17 or later.

iPhone
Requires iOS 17 or later.

iPad
Requires iPadOS 17 or later.
Languages: English and 22 more

English, Albanian, Arabic, Danish, Dutch, Finnish, French, German, Greek, Hindi, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese, Turkish
Age Rating: 13+

13+

Learn More

Infrequent
Medical Treatment information

Contains
Health or Wellness Topics
In-App Purchases: Yes

Premium Monthly $9.99

Premium Yearly $49.99

Learn More

Developer Website

Privacy Policy

License Agreement

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Ratings & Reviews

Seems accurate

All good thanks

Check ECG+

$50 for an AI “invented” app

What’s New

App Privacy

Data Not Linked to You

Accessibility

Supported Features

VoiceOver

Larger Text

Dark Interface

Sufficient Contrast

Information

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