ECG Your Watch ECG Reader for iPhone

App overview

ECG+ is a free iPhone app that expands what the Apple Watch’s ECG feature can do. Designed primarily as an educational and self-monitoring tool, it helps users examine recorded electrocardiograms and observe trends in heart rate variability (HRV).

Core capabilities

• Integrates with Apple Health to read and store ECG data seamlessly.
• Tracks HRV over time, which many clinicians use as an objective marker of physical readiness.
• Lets you review previously recorded ECG strips for personal learning and pattern recognition.
• Calculates PQRST intervals to create a distinctive heartbeat profile for each user.
• Enhances the native Apple Watch ECG functionality by adding analysis and display options.
• Available at no cost for iPhone users and intended for informational use rather than clinical diagnosis.

How the analysis works

The app measures standard ECG waveform components (P, Q, R, S, T) and computes the timing between them. By comparing those intervals across recordings, ECG+ produces a personalized heartbeat signature — similar in concept to a fingerprint — and displays changes in HRV that can reflect recovery and readiness.

Limitations and user guidance

• ECG+ is not a medical device and does not provide diagnoses, treatment recommendations, or emergency medical services.
• Information in the app is for education and self-observation only. If you notice concerning symptoms or abnormal recordings, consult a healthcare professional promptly.
• Use the app as a supplement to — not a replacement for — professional cardiovascular evaluation.

Suggested alternatives

• IDV — IMAIOS DICOM Viewer (Free)
• Cardiogram — Heart Health Monitor
• Qardio — Blood Pressure & Heart Health apps

Each alternative offers different features; review their descriptions and privacy policies to choose the one that best matches your needs.