Comparison

arrhythmia 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

arrhythmia

Practice interpreting EKGs in lead II with realistic simulations. Choose rhythms to study or test your knowledge in a game mode. Ideal for healthcare professionals to hone their diagnostic skills.

Highlights
  • EKG interpretation practice
  • Lead II simulation
  • Study Mode with rhythm selection
  • Game Mode for random rhythm identification
  • Customizable rhythm sets
  • Realistic rhythm variations
Currently charting
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Practice reading EKGs in lead II Basic EKG interpretation is more accurately described as an intermediate level skill that takes time, practice and refreshing. Whether you are a doctor, nurse, EMT or tech your ability to read and pickup on basic EKG changes in real time is essential. Practice with an app that actually looks like what you see at work. Use the app’s ‘Study Mode’ to choose one or multiple rhythms to view and compare. A brief description of each rhythm is provided, you can also pause and restart rhythms. Delete and add specific rhythms as desired. Rates, amplitudes and widths of the rhythms are dynamically set which provides for a more realistic simulation and variation within each type of rhythm. Use the app’s ‘Game Mode’ to challenge yourself to identify rhythms presented randomly in lead II. If desired, you can also custom specify which rhythms to include in the game. Access to Study Mode and Game Mode requires a subscription via in-app purchase. Please Read: The purpose of this app is not to teach basic EKG interpretation but rather to practice basic EKG interpretation. If you don’t know basic EKG interpretation seek out additional resources such as classes, books, online materials and mentors to learn more and further your understanding. Note: The cardiac rhythms presented by the app are simulated approximations. There is NO guarantee to the accuracy of rhythms presented. While accuracy is not guaranteed it is a goal. Please report errors, suggestions or general feedback to: feedback@arrhythmiaApp.com. Arrhythmia uses the standard Apple Terms of Use End User License Agreement (EULA): http://www.apple.com/legal/itunes/appstore/dev/stdeula

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
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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

arrhythmia4 screens
ECG+ | Your Watch ECG Reader4 screens

Verdict

The call

The clearest difference is monetization model: ECG+ | Your Watch ECG Reader at free with in-app purchases against arrhythmia's subscription. ECG+ | Your Watch ECG Reader also leads on rating (4.5 vs 4.2) and review sentiment (64% vs 45%). On price, ads, in-app purchases and device support 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. arrhythmia sells 3 in-app purchases, starting at $2.99 per month and ECG+ | Your Watch ECG Reader sells 5 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ECG+ | Your Watch ECG Reader holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: ECG+ | Your Watch ECG Reader has 2.5K ratings behind it against 111, so its average is the more settled of the two. Written reviews point the same way: 45% of arrhythmia's written reviews are positive against 64% of ECG+ | Your Watch ECG Reader's.

UpkeepUpdate frequency

arrhythmia ships an update every 3 weeks, ECG+ | Your Watch ECG Reader every 10 days. The most recent releases landed on September 21, 2026 and September 25, 2026 respectively.

Scorecard6 real differences · 5 level
arrhythmia versus ECG+ | Your Watch ECG Reader: the parameters behind the verdict, then further details
ParameterarrhythmiaECG+ | Your Watch ECG Reader
PriceFreeFree
Rating4.2 (111 ratings)4.5 (2.5K ratings) — better
Positive reviews45.0% of reviews64.4% of reviews — better
Number of ratings1112.5K — better
Update frequencyEvery 3 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
Best chart rank#188#35 — better
DevicesiPhone, iPad, MaciPhone, iPad, Apple Watch
Requires iOS17.6 — better18.0
Further details — not scored
Size159 MB74 MB
Age rating17+17+
DeveloperSingle Sail Software, LLCHeartworks Pty Ltd

Customer experience

arrhythmia

All ratings111 ratings
Positive80.2%
Neutral4.5%
Negative15.3%
Written reviews40 reviews
Positive45.0%
Neutral7.5%
Negative47.5%

ECG+ | Your Watch ECG Reader

All ratings2,460 ratings
Positive87.0%
Neutral3.5%
Negative9.5%
Written reviews447 reviews
Positive64.4%
Neutral8.3%
Negative27.3%

Bugs and requests

arrhythmia

Not enough reviews yet to summarise bugs or requests.

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

3 purchases

arrhythmia

Subscriptions2
  • Monthly7 Days trial$2.991 Month
  • Yearly7 Days trial$19.991 Year
One-time1
  • Unlock All Rhythms (One-time Purchase)$4.99
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 arrhythmia free?
arrhythmia is free to download, with in-app purchases available.
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, arrhythmia or ECG+ | Your Watch ECG Reader?
ECG+ | Your Watch ECG Reader is rated higher. arrhythmia averages 4.2 out of 5 from 111 ratings, while ECG+ | Your Watch ECG Reader averages 4.5 from 2.5K ratings.
Do arrhythmia or ECG+ | Your Watch ECG Reader have ads?
Neither arrhythmia nor ECG+ | Your Watch ECG Reader shows ads.
Which is updated more often, arrhythmia or ECG+ | Your Watch ECG Reader?
arrhythmia ships an update every 3 weeks, and ECG+ | Your Watch ECG Reader every 10 days. Most recently, arrhythmia was updated on September 21, 2026 and ECG+ | Your Watch ECG Reader on September 25, 2026.
Which is more popular, arrhythmia or ECG+ | Your Watch ECG Reader?
arrhythmia currently peaks at #188 in the App Store charts, and ECG+ | Your Watch ECG Reader at #35. Chart position reflects recent download velocity rather than total install base.

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