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Best Free Ecg App

250+ iOS apps curated and reviewed

3.9 avg rating
19 free apps
Updated September 2026

Looking for free free ecg app? 19 of our 250+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Free Ecg App (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1ECG+ | Your Watch ECG ReaderECG+ | Your Watch ECG ReaderFree4.5★ (2.5K)NoYesSep 2026
2KardiaKardiaFree4.8★ (232K)NoNoSep 2026
3Istel ECGIstel ECGFree3.0★ (1)NoNoMay 2026
4Instant Heart Rate: HR MonitorInstant Heart Rate: HR MonitorFree4.9★ (229K)YesYesSep 2026
5ECG heart analyze - watchECG heart analyze - watchFree4.7★ (1.6K)NoYesSep 2026
6Cardiio: Heart Rate MonitorCardiio: Heart Rate MonitorFree4.7★ (58K)NoYesSep 2026
7OpoliOpoliFree2.5★ (72)NoNoSep 2026
8ECG - SmartECG - SmartFree—NoNoMay 2026

Top Picks for Free Ecg App

ECG+ | Your Watch ECG Reader#1

ECG+ | Your Watch ECG Reader by Heartworks Pty Ltd

Evidence your doctor can use
Editor's Choice
🏥 Medical
4.5😐(2.5K ratings)
FreeIn-App Purchases
#31in Medical
ECG+ | Your Watch ECG Reader screenshot 1
ECG+ | Your Watch ECG Reader screenshot 2
ECG+ | Your Watch ECG Reader screenshot 3
ECG+ | Your Watch ECG Reader screenshot 4
ECG+ | Your Watch ECG Reader screenshot 5
ECG+ | Your Watch ECG Reader screenshot 6

This app enhances your Apple Watch ECG recordings by calculating PQRST to reveal your unique heartbeat signature. It also monitors Heart Rate Variability (HRV), an objective measure of physical readiness, and integrates with Apple Health.

What We Love

  • 🚀 Accurate ECG readings
  • 👍 Helpful in monitoring heart health
  • 📊 Provides useful insights and data
  • 🤖 Impressive algorithms and analysis

Room to Improve

  • 🐛 Inconsistent performance and reliability
  • 💰 Expensive subscription model
  • 🤔 Limited functionality in free version
  • ⚠️ Compatibility issues with older devices
Kardia#2

Kardia by AliveCor, Inc.

Strong Contender
🏥 Medical
4.8😊(232K ratings)
Free
#87in Medical
Kardia screenshot 1
Kardia screenshot 2
Kardia screenshot 3
Kardia screenshot 4
Kardia screenshot 5
Kardia screenshot 6

Record medical-grade EKGs from home using a personal EKG device. Get instant analysis for common arrhythmias and easily share your heart data with your doctor for remote management of your heart health.

What We Love

  • 👍 Useful for monitoring heart health
  • 🚀 Accurate and reliable device
  • 📊 Helpful for providing evidence to doctors
  • 🤖 Convenient and easy to use
  • 💡 Allows remote monitoring of heart conditions

Room to Improve

  • 🔒 Requires subscription to unlock advanced features
  • 🔋 Battery life issues
  • 🔌 Connectivity problems
  • 🤔 Inconsistent or inaccurate readings
  • 💰 Expensive device and subscription
Istel ECG#3

Istel ECG by Diagnosis S.A.

Worth Considering
🏥 Medical
3.0(1 ratings)
Free
Istel ECG screenshot 1
Istel ECG screenshot 2
Istel ECG screenshot 3

This application works with a compatible recorder to perform quick ECG tests. It displays heart electrical activity, stores measurement history, and allows for easy sharing of results. Configuration of device parameters and PDF export are also supported.

More Free Ecg App apps to explore

FAQ about Free Ecg App

What is the best free ecg app for iPhone?
ECG+ | Your Watch ECG Reader tops our free ecg app ranking as of September 2026, with a 4.5-star average from 2.5K App Store ratings, and it's free to download.
ECG+ | Your Watch ECG Reader has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 250+ free ecg app on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
ECG+ helps you review your recorded ECGs on your Apple Watch and monitor your Heart Rate Variability (HRV). It calculates PQRST to reveal your unique heartbeat signature and tracks HRV changes, which is recognized as a measure of physical readiness. The app integrates with Apple Health.
No, ECG+ is not a diagnostic tool and does not provide medical services or advice. The app and its algorithms are for general informational and educational purposes only and are not a substitute for professional medical care, diagnosis, or treatment.