Comparison

Kardia vs ECG+ | Your Watch ECG Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Kardia

This app allows you to record medical-grade EKGs using compatible personal devices. It provides immediate analysis for common arrhythmias and enables sharing of heart data with your doctor for remote monitoring and health history tracking.

Highlights
  • Record medical-grade EKGs
  • Immediate EKG analysis
  • Share heart data with doctors
  • Track heart health history
  • Integrates with Apple Health
  • Remote heart condition monitoring
Features
Currently charting
Read full description

Kardia works with the FDA-cleared KardiaMobile, KardiaMobile 6L, or KardiaBand personal EKG devices, which can detect the most common arrhythmias in just 30 seconds. The Kardia app is designed to make managing heart care from home easier than ever, giving you the ability to seamlessly record EKGs, share heart data with your doctor remotely, keep track of your health history, and more. Capture a medical-grade EKG with your Kardia device anytime, anywhere—no patches, wires, or gels required. Get an immediate result from Kardia's Instant Analysis of normal, possible atrial fibrillation, bradycardia, or tachycardia. For additional analysis, you can choose to send the recording to your physician or to one of our partners for a Clinician Review by a cardiologist (US, Australia only) or cardiac care physiologist (UK, Ireland only). The Kardia system is recommended by leading cardiologists and used by people around the world for accurate EKG recordings. Track your heart health data from home with the medical accuracy your doctor can trust. NOTE: This app requires KardiaMobile, KardiaMobile 6L, or KardiaBand hardware to record an EKG. Get your Kardia device now at alivecor.com. Kardia integrates with Apple Health to create a combined view of your health metrics. NOTE: Requires KardiaMobile or KardiaBand hardware to record an EKG FDA 510(k) numbers: K191406, K181823, K171816, K183319 CE # 0123

About

ECG+ | Your Watch ECG Reader

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.

Highlights
  • ECG recording analysis
  • Heart Rate Variability (HRV) tracking
  • PQRST calculation
  • Heartbeat signature analysis
  • Apple Health integration
Features
Currently charting
Read full description

REAL stories, in their OWN words. I had an appointment with a cardiologist today. I printed my ECGs from this ECG+ app. The cardiologist's response was: "wow, this just saved us such an amount of time and research". He could immediately see the direction he should be looking further into. Hans_vdk · Belgium · 19 Mar 2024 ○ Accurate reading I am a retired Paramedic and can read ECGs very well. I knew I was having an irregular heart rhythm so I downloaded this ecg+ app and printed out my latest one lead ECG. I went to the Emergency Room with the print out, ecg+ was spot on and matched the 12-lead in the ER. The ER doc was quite impressed with the interpretation and print out. Code 3 2020 · United States · Retired Paramedic · 14 May 2024 =================== ECG+ analyzes your Apple Watch ECG to unlock the crucial cardiac details hidden inside, then creates a report with clear evidence of what happened, ready to bring to your doctor. Findings include patterns such as possible early, or premature, heartbeats, which some people notice around moments of sudden palpitations or skipped heartbeats, and burdens associated with premature beats and AFib. Most importantly, ECG+ tracks these findings for your peace of mind, so you know when things are under control or when your attention is needed, for example when premature beat burden is rising. ECG+ does not diagnose symptoms or medical episodes. Instead, it presents your recorded ECG data in a clearer, more structured way, so you can have a more informed and productive conversation with your doctor. Many users, including medical professionals, have found real value in ECG+. ○ Advanced readings to help your cardiologist Today I showed my doctor several ECGs derived from my Apple Watch through ECG+ and advanced data analysis. He was really impressed and helped answer a lot of my questions on PACs and PVCs. Apple ECG alone will not identify enough of what's going on. Highly recommend this app. MachKing · United States · 22 Mar 2024 ○ Very accurate As a CT ICU nurse of 34 years I find the readings on the EKG app to be surprisingly accurate! I'm very impressed with the quality of the telemetry given that it's from a watch on my wrist. It's also quite reassuring as I get older to know that it can automatically monitor for arrhythmia so I can be more proactive in following up with my physician on my heart health. Miramichigael · United States · CT ICU nurse, 34 years · 5 May 2024 [Intuitive designs] Every finding is marked directly on the ECG, with the supporting measurements laid out in one clear report: Premature beats - the skipped, extra or fluttering beats you actually feel Rhythm patterns - bigeminy, trigeminy, quadrigeminy, couplets and triplets, marked where they happen Premature-beat burden - how often abnormal beats occur, tracked over time QT / QTc interval measurements Heart Rate Variability (HRV) - with its trend, shown as a Poincaré plot AFib irregularity - the irregularly-irregular pattern that points to atrial fibrillation [HealthKit] ECG+ integrates with Apple Health through HealthKit, making it easy to access your Apple Watch ECG recordings without manual imports. [Disclaimer] ECG+ is not a diagnostic tool and does not provide medical advice. It is intended for informational and educational purposes only and is not a substitute for professional medical care. In an emergency, contact your doctor or emergency services immediately. Terms of Use: http://www.apple.com/legal/itunes/appstore/dev/stdeula [Copyright Notice] ECG+ was originally designed and developed by Heartworks Pty Ltd. Original features, designs, and implementations within the app are protected by copyright. Unauthorized copying or imitation may infringe intellectual property rights. All rights reserved.

Screenshots

Kardia4 screens
ECG+ | Your Watch ECG Reader4 screens

Verdict

The call

The clearest difference is in-app purchases: Kardia at none against ECG+ | Your Watch ECG Reader's 5. Kardia also leads on ratings volume (238K vs 2.6K) and rating (4.8 vs 4.5). ECG+ | Your Watch ECG Reader's advantage is update cadence (every 9 days vs monthly). On price, review sentiment, ads and chart position 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ECG+ | Your Watch ECG Reader sells 5 in-app purchases, starting at $9.99 per month. Kardia asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Kardia holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Kardia has 238K ratings behind it against 2.6K, so its average is the more settled of the two. Written reviews split almost evenly too, at 65% and 64% positive.

UpkeepUpdate frequency

Kardia ships an update monthly, ECG+ | Your Watch ECG Reader every 9 days. Both last shipped on November 7, 2026.

Scorecard6 real differences · 5 level
Kardia versus ECG+ | Your Watch ECG Reader: the parameters behind the verdict, then further details
ParameterKardiaECG+ | Your Watch ECG Reader
PriceFreeFree
Rating4.8 (238K ratings) — better4.5 (2.6K ratings)
Positive reviews65.1% of reviews — better64.2% of reviews
Number of ratings238K — better2.6K
Update frequencyMonthlyEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank#73#31 — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, Apple Watch
Requires iOS15.0 — better18.0
Further details — not scored
Size457 MB61 MB
Age rating17+17+
DeveloperAliveCor, Inc.Heartworks Pty Ltd

Customer experience

Kardia

All ratings238,296 ratings
Positive96.4%
Neutral2.0%
Negative1.6%
Written reviews1,309 reviews
Positive65.1%
Neutral11.5%
Negative23.4%

ECG+ | Your Watch ECG Reader

All ratings2,578 ratings
Positive87.1%
Neutral3.5%
Negative9.4%
Written reviews450 reviews
Positive64.2%
Neutral8.4%
Negative27.3%

User reviews

Kardia

From 238K App Store ratings

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

ECG+ | Your Watch ECG Reader

From 2.6K App Store ratings

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

Bugs and requests

Kardia

Reported bugs

3 issues
  • App crashes or freezes
  • Compatibility issues with newer devices
  • Difficulty sending or saving ECG recordings

Requested features

4 requests
  • Integrate with Apple Health
  • Add temperature tracking
  • Improve data sharing and reporting
  • Enhance user interface and experience

ECG+ | Your Watch ECG Reader

Reported bugs

3 issues
  • App not working or crashing
  • Inability to set up or connect with Apple Watch
  • Inaccurate readings or interpretations

Requested features

4 requests
  • Percentage of Long QT interval
  • More customization options
  • Ability to export data
  • Improved user guidance and documentation

In-app purchases

None

Kardia

No in-app purchases

5 purchases

ECG+ | Your Watch ECG Reader

Subscriptions3
  • ECG+ PREMIUM$9.991 Month
  • ECG+ PREMIUM3 Days trial$59.991 Year
  • ECG+ PREMIUM Family$79.991 Year
One-time2
  • ECG+ PREMIUM (Lifetime)$199.99
  • ECG+ PREMIUM Family (Lifetime)$299.99

Questions

Is Kardia free?
Kardia is free to download, with no in-app purchases.
Is ECG+ | Your Watch ECG Reader free?
ECG+ | Your Watch ECG Reader is free to download, with in-app purchases available.
Which has better reviews, Kardia or ECG+ | Your Watch ECG Reader?
Kardia is rated higher. Kardia averages 4.8 out of 5 from 238K ratings, while ECG+ | Your Watch ECG Reader averages 4.5 from 2.6K ratings.
Do Kardia or ECG+ | Your Watch ECG Reader have ads?
Neither Kardia nor ECG+ | Your Watch ECG Reader shows ads.
Which is updated more often, Kardia or ECG+ | Your Watch ECG Reader?
Kardia ships an update monthly, and ECG+ | Your Watch ECG Reader every 9 days. Most recently, Kardia was updated on November 7, 2026 and ECG+ | Your Watch ECG Reader on November 7, 2026.
Which is more popular, Kardia or ECG+ | Your Watch ECG Reader?
Kardia currently peaks at #73 in the App Store charts, and ECG+ | Your Watch ECG Reader at #31. Chart position reflects recent download velocity rather than total install base.

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