ECG+ | Your Watch ECG Reader
Heart arrhythmia check & HRV
Free · In-App Purchases
ECG+ helps you review your recorded ECGs on your Apple Watch, and monitor Heart rate variability (HRV). Integrated with Apple Health, ECG+ maximizes the potential of your Apple Watch ECG, by calculating PQRST to reveal your heartbeat signature, unique like fingerprint. ECG+ also tracks HRV changes, which is widely recognized as an objective measure of physical readiness.
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Disclaimer:
ECG+ is NOT a diagnostic tool, and it does NOT provide medical services or medical advice. The app and its algorithms, are offered solely for general informational and educational purposes. They are not intended to be a substitute for professional medical care, diagnosis, or treatment by a qualified healthcare provider.
The health information provided in ECG+ should not be used to diagnose, treat, cure, or prevent any disease. If you believe you are experiencing a medical emergency, call your doctor or emergency services immediately. Do not rely on ECG+ or any form of electronic communication for urgent medical needs. ECG+ is not designed or intended for emergency medical situations.
The ECG (electrocardiogram) feature used by ECG+ is provided through Apple Watch devices. It is only available in regions where the feature has received the appropriate regulatory clearances, such as FDA clearance, CE marking, UKCA marking, TGA approval, or Health Canada approval.
Terms of use - http://www.apple.com/legal/itunes/appstore/dev/stdeula
more Very clear and nice app. Must learn little to understand everything :)
Developer Response Thank you for your feedback! We’re glad you find the app clear and helpful, and we’ll keep working to make it even easier to use.
Very clear and nice app. Must learn little to understand everything :)
Thank you for your feedback! We’re glad you find the app clear and helpful, and we’ll keep working to make it even easier to use.
Added time-based grouping on the timeline, including sections such as “Today”, “Last Week”, for better timeline organization.
Improved stability and resolved a rare crash related to concurrent Firebase access.
1.13 12 Feb
Improved insights across pages
Explanations are now available in more areas of the app, helping you better understand your ECG data, heart rhythm findings, and health trends.
Stability and performance improvements
Multiple UI fixes and optimizations for a smoother experience.
1.12.7 29 Jan
GPT now explains PAC/PVC burdens and your overall recording statistics, highlighting changes over time.
Improved algorithm delivers more accurate P-wave identification.
ECG+ also features a new dark mode icon.
Please note, ECG+ is designed for educational use only and is not a diagnostic tool.
1.12.6 11/11/2025
GPT now explains PAC/PVC burdens and your overall recording statistics, highlighting changes over time.
Improved algorithm delivers more accurate P-wave identification.
ECG+ also features a new dark mode icon.
Please note, ECG+ is designed for educational use only and is not a diagnostic tool.
1.12.5 11/11/2025
ECG+ now features a new dark mode icon.
GPT can explain your overall recording statistics and HRV changes over time now.
We’ve fixed and cleaned up the messy preview strip that confused many users.
We’ve fixed a potential crash issue on iPad and improved overall algorithm performance.
1.12.4 27/10/2025
We’ve fixed the recent OpenAI API key issue — the feature is now back up and working smoothly.
Please note: ECG+ is not a diagnostic tool. All information provided is for general informational purposes only and is not a substitute for medical advice, diagnosis, or treatment. Always consult a doctor before making any health-related decisions.
1.12.3 01/10/2025
· Ask unlimited questions about your ECG reports — all included in your subscription.
· Get clearer insights into your HRV trends over time with easy explanations of what’s happening and what matters most.
· Enjoy a refreshed UI for a smoother experience.
· Bug fixes and performance improvements to make everything run better.
1.12.2 28/08/2025
· Ask unlimited questions about your ECG reports — all included in your subscription.
· Get clearer insights into your HRV trends over time with easy explanations of what’s happening and what matters most.
· Enjoy a refreshed UI for a smoother experience.
· Bug fixes and performance improvements to make everything run better.
1.12.1 22/08/2025
• Automatic ECG Analysis: Your Apple Watch ECGs are now analyzed as soon as they’re saved on your watch.
• Smart Notifications: Get notified when your new ECG result is ready to view.
Thanks for using ECG+ to better understand your heart.
1.12 08/08/2025
• ChatGPT Integration: ECG+ now provides clear, plain-language explanations for your ECG findings — helping you better understand your heart rhythm, patterns, and irregularities.
• Polished Interface & Interactions: We’ve fine-tuned animations, transitions, and filters to make the app smoother and more intuitive.
• Improved Stability: Better handling of rare cases, edge conditions, and large data sets means a more reliable experience across all devices.
1.11 12/05/2025
We’ve made several behind-the-scenes improvements to enhance performance and reliability. While most updates aren’t visible, advanced users can now manually adjust T wave identification for greater control in ECG analysis.
1.10 19/03/2025
This update includes a critical correction to QTc over-estimation caused by T wave elevation. Unlike traditional approaches that rely on the isoelectric line, the tangent method identifies the true T wave baseline, reflecting your heart’s real repolarization. This improved algorithm now ensures more accurate QTc calculations, enhancing the reliability of ECG analysis.
A huge Thank You to everyone who shared their ECG data to help us make these improvements! Your support drives us forward.
1.9.7 04/12/2024
In Version 1.9.6, we’re thrilled to roll out the Export Your ECGs feature! Now, you can export your ECG data to a CSV file, which includes detailed measurements for each reading—such as PR, QRS, QT, and RR intervals—along with five QTc calculation options: Bazett, Fridericia, Framingham, Hodges, and Rautaharju. This range of QTc formulas allows you to choose the method that best aligns with your needs or healthcare recommendations.
The CSV format is designed to make it easy for you to track trends, perform your own analysis, or share data with healthcare providers, helping you take an active role in monitoring and understanding your heart health.
1.9.6 12/11/2024
ECG+ interprets your Apple Watch ECGs to detect more potential arrhythmias and abnormalities.
◆ Atrial Fibrillation Detection: Identifies the most common arrhythmia that often requires medical attention.
◆ PAC/PVC Identification: Recognizes common but typically benign heart conditions.
◆ Prolonged QT Interval Alerts: Highlights prolonged QT intervals, indicating potential delays in heart recharging.
◆ T Wave Changes: Detects inverted or flattened T waves, which may suggest underlying health issues.
◆ HRV Monitoring: Tracks Heart Rate Variability (HRV), a key indicator of overall wellbeing.
1.9.5 07/11/2024
The latest version of ECG+ includes a new Heartbeat Navigator, designed to help users quickly locate abnormal heartbeats, such as PACs or PVCs, for more efficient analysis. This powerful tool enhances the user experience, making heart monitoring more intuitive and effective.
Additionally, the app now offers advanced detection for T wave abnormalities. Capable of identifying both flattened and inverted T waves, ECG+ provides essential insights into possible heart conditions, supporting early detection and proactive health management. This upgrade allows users to monitor their heart health with increased precision and confidence.
1.9.4 05/11/2024
The latest version of ECG+ includes a new Heartbeat Navigator, designed to help users quickly locate abnormal heartbeats, such as PACs or PVCs, for more efficient analysis. This powerful tool enhances the user experience, making heart monitoring more intuitive and effective.
Additionally, the app now offers advanced detection for T wave abnormalities. Capable of identifying both flattened and inverted T waves, ECG+ provides essential insights into possible heart conditions, supporting early detection and proactive health management. This upgrade allows users to monitor their heart health with increased precision and confidence.
1.9.3 04/11/2024
The latest version of ECG+ introduces advanced detection for T wave abnormalities, fully compatible with Apple Watch ECG. Now capable of identifying both flattened and inverted T waves, the app provides essential insights into possible heart conditions, supporting early detection and proactive health management. This powerful upgrade lets you monitor your heart health with increased precision and confidence.
1.9.2 31/10/2024
The latest version of ECG+ brings advanced T wave abnormality detection, seamlessly integrating with Apple Watch ECG. Now equipped to identify both flattened and inverted T waves, the app delivers crucial insights into potential heart conditions, enabling early detection and proactive management. This enhanced functionality empowers you to take charge of your heart health with greater accuracy and confidence.
1.9.1 17/10/2024
With seamless integration with Apple Watch ECG, the latest version of ECG+ introduces powerful T wave abnormality detection. Now capable of identifying both flattened and inverted T waves, the app provides critical insights into potential underlying heart conditions. This enhanced feature offers early detection and proactive management, helping you stay ahead of your heart health with precision and ease.
1.9 14/10/2024
The latest version of ECG+ introduces several improvements to enhance your experience:
More Accurate PVC Detection: With an improved algorithm, the app now identifies premature ventricular contractions (PVCs) with greater precision.
Detailed Explanations: Each finding on your ECG report is accompanied by clearer, more detailed explanations, helping you better understand your heart’s activity.
Automatic QRS Amplitude Calculation: ECG+ is now the only app that automatically calculates QRS amplitude, giving you a more comprehensive analysis.
1.8.7 10/09/2024
Long QT Episode Overview: We’ve introduced a detailed summary feature for Long QT episodes, making it simpler for you to monitor and comprehend these vital occurrences.
Enhanced Replay Mode: Explore your ECG data in greater detail with our new replay mode. Now, you can revisit past recordings, view them in real-time, and uncover insights like never before.
1.8.6 23/08/2024
Long QT Episode Summary: We've added a comprehensive summary feature for Long QT episodes, helping you easily track and understand these critical events.
New Replay Mode: Dive deeper into your ECG data with our all-new replay mode. Now, you can review past recordings, watch them in real-time, and gain insights like never before.
1.8.5 19/08/2024
Discover the enhanced features of our latest version, designed to elevate your ECG analysis:
Our latest version introduces two advanced methods for QT interval identification. The Tangent Method measures the QT interval by drawing a tangent at the steepest point of the T-wave, while the Threshold Method sets a threshold level for consistent measurements even in challenging ECGs. Additionally, our enhanced algorithm now automatically selects the most suitable QTc formula based on your specific ECG data, ensuring accurate and personalized QTc calculations.
You can now monitor and analyze PR interval trends over time, gaining deeper insights into your heart’s electrical activity.
Experience a streamlined and intuitive design for easier navigation and an improved user experience. Performance optimizations ensure faster processing times and smoother operation, even with large datasets. Various minor bug fixes have been addressed to enhance stability and reliability.
Experience the most advanced ECG analysis tool with these new features and improvements. Update to the latest version of ECG+ today and elevate your cardiac health monitoring!
1.8.4 10/07/2024
The latest version introduces two advanced methods for QT interval identification: the Tangent Method, which measures the QT interval by drawing a tangent at the steepest point of the T-wave, and the Threshold Method, which sets a threshold level for consistent measurements even in challenging ECGs. Additionally, our advanced algorithm now automatically selects the most appropriate QTc formula based on your specific ECG data, ensuring accurate and personalized QTc calculations.
You can now monitor and analyze PR interval trends over time to gain deeper insights into your heart's electrical activity.
Additional Improvements:
We have enhanced the user interface with a streamlined and intuitive design for easier navigation and improved user experience. Performance optimizations have been made to ensure faster processing times and smoother operation, even with large datasets. Various minor bug fixes have been addressed to enhance stability and reliability.
Experience the most advanced ECG analysis tool with these new features and improvements. Update to the latest version of ECG+ today and take your cardiac health monitoring to the next level!
1.8.3 01/06/2024
The latest version introduces two advanced methods for QT interval identification: the Tangent Method, which measures the QT interval by drawing a tangent at the steepest point of the T-wave, and the Threshold Method, which sets a threshold level for consistent measurements even in challenging ECGs. Additionally, our advanced algorithm now automatically selects the most appropriate QTc formula based on your specific ECG data, ensuring accurate and personalized QTc calculations.
You can now monitor and analyze PR interval trends over time to gain deeper insights into your heart's electrical activity.
Additional Improvements:
We have enhanced the user interface with a streamlined and intuitive design for easier navigation and improved user experience. Performance optimizations have been made to ensure faster processing times and smoother operation, even with large datasets. Various minor bug fixes have been addressed to enhance stability and reliability.
Experience the most advanced ECG analysis tool with these new features and improvements. Update to the latest version of ECG+ today and take your cardiac health monitoring to the next level!
1.8.2 30/05/2024
Added time-based grouping on the timeline, including sections such as “Today”, “Last Week”, for better timeline organization.
Improved stability and resolved a rare crash related to concurrent Firebase access.
more Version 1.13 12 Feb
Data Not Linked to You The following data may be collected but it is not linked to your identity: