Best Arrhythmia Apps

200+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated July 2026

Out of 200+ arrhythmia apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Arrhythmia Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1arrhythmiaarrhythmiaFree4.2★ (87)NoYesJul 2026
2Cardiio: Heart Rate MonitorCardiio: Heart Rate MonitorFree4.7★ (58K)NoYesJul 2026
3ECG+ | Your Watch ECG ReaderECG+ | Your Watch ECG ReaderFree4.5★ (2.3K)NoYesJul 2026
4KardiaKardiaFree4.8★ (222K)NoNoJul 2026
5Preventicus Heartbeats.Preventicus Heartbeats.Free4.0★ (92)NoYesJun 2026
6HeartLab: ECG & Heart AnalysisHeartLab: ECG & Heart AnalysisFree3.2★ (14)NoYesJul 2026
7HeartScan: Heart Rate MonitorHeartScan: Heart Rate MonitorFree3.6★ (50)YesYesJul 2026
8Instant Heart Rate: HR MonitorInstant Heart Rate: HR MonitorFree4.9★ (229K)YesYesJul 2026

Top Picks for Arrhythmia

arrhythmia#1

arrhythmia by Single Sail Software, LLC

Practice reading EKGs, lead II
Editor's Choice
🏥 Medical
4.2(87 ratings)
FreeIn-App Purchases
arrhythmia screenshot 1
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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.

Cardiio: Heart Rate Monitor#2

Cardiio: Heart Rate Monitor by Cardiio, Inc.

HR checker & beat analyzer
Strong Contender
💪 Health & Fitness
4.7😊(58K ratings)
FreeIn-App Purchases
Cardiio: Heart Rate Monitor screenshot 1
Cardiio: Heart Rate Monitor screenshot 2
Cardiio: Heart Rate Monitor screenshot 3
Cardiio: Heart Rate Monitor screenshot 4
Cardiio: Heart Rate Monitor screenshot 5
Cardiio: Heart Rate Monitor screenshot 6

Easily track your heart rate, blood oxygen, and fitness using your phone's camera. Get instant readings, analyze trends, and access quick workouts to improve your cardiovascular health. Unlock advanced features for deeper insights and personalized health comparisons.

What We Love

  • 👍 Accurate heart rate monitoring
  • 👍 Convenient and easy to use
  • 👍 Helpful for monitoring heart health conditions
  • 👍 Useful workout features

Room to Improve

  • 🐛 Inconsistent or unreliable readings
  • 🐛 Difficulty getting readings after exercise
  • 🐛 Compatibility issues with newer iPhone models
ECG+ | Your Watch ECG Reader#3

ECG+ | Your Watch ECG Reader by Heartworks Pty Ltd

Evidence your doctor can use
Worth Considering
🏥 Medical
4.5😐(2.3K ratings)
FreeIn-App Purchases
#34in 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

More Arrhythmia apps to explore

4
Kardia
Kardia
Kardia
by AliveCor, Inc.
Free

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.

Record medical-grade EKGsInstant arrhythmia analysisShare heart data with doctors
🏥 Medical
(222K)
free
5
Preventicus Heartbeats.
Preventicus Heartbeats.
Preventicus Heartbeats.
ECG alike heart rhythm test
Free

Monitor your heart rhythm using your smartphone camera for quick and detailed analysis. Detect potential cardiac arrhythmias like atrial fibrillation with regular use. Receive expert review for abnormal results and personalized heart health articles.

Heart rhythm analysis via smartphone cameraOne-minute heart rhythm testDetection of cardiac arrhythmia
🏥 Medical
(92)
free with in-app purchases
6
HeartLab: ECG & Heart Analysis
HeartLab: ECG & Heart Analysis
HeartLab: ECG & Heart Analysis
AFib PVC PAC Arrhythmia HRV AI
Free

This app analyzes smartwatch ECG data, providing professional-grade insights into heart rhythm irregularities and heart rate variability. It uses AI to explain results in plain language and generates shareable PDF reports for cardiologists. Data is analyzed locally for complete privacy.

Advanced arrhythmia detection (AFib, PAC, PVC, Bigeminy, Trigeminy)Comprehensive HRV analysis with 12+ professional metricsAI-powered explanations of ECG results
🏥 Medical
(14)
free
7
HeartScan: Heart Rate Monitor
HeartScan: Heart Rate Monitor
HeartScan: Heart Rate Monitor
Instant Pulse & Rhythm Check
Free

This app uses your phone's sensors to visualize your heart's mechanical activity, offering insights into pulse, rhythm, and recovery. It provides detailed cardio-wave views and generates doctor-ready reports, all while keeping your data private on your device.

Instant pulse and rhythm checkCardio-wave viewerHeart rate variability (HRV) snapshot
💪 Health & Fitness
(50)
free with in-app purchases
8
Instant Heart Rate: HR Monitor
Instant Heart Rate: HR Monitor
Instant Heart Rate: HR Monitor
Pulse Tracker & Stress Test
Free

Measure your heart rate and stress levels accurately using your phone's camera. Track trends, view pulse waveforms, and utilize a StandUp test for fitness insights. Integrates with Apple Health.

Heart rate measurementStress level checkPulse waveform graphs
💪 Health & Fitness
(229K)
free with in-app purchases
9
Watch ECG Pro - Deep Analysis
Watch ECG Pro - Deep Analysis
Watch ECG Pro - Deep Analysis
Arrhythmia, AFibCheck, HRV
Free

Monitor your heart rhythm and analyze ECG data from wearables or patch recorders. Receive detailed feedback and practical tips for improving your physical health. This app is for informational purposes and not a substitute for professional medical advice.

Analyze ECG from Apple Watch or patch recorderMeasure and analyze pulse rhythm with phone cameraReal-time ECG data capture via Bluetooth
🏥 Medical
(55)
free with in-app purchases
10
Qaly | ECG Reader
Qaly | ECG Reader
Qaly | ECG Reader
Your ECGs, Read by Experts
Free

Get your ECGs analyzed by certified experts within minutes for peace of mind. This app supports various devices like Apple Watch and Fitbit, offering detailed interpretations of palpitations and abnormal heart rhythms. Track heart rate variability to monitor stress and recovery.

Expert ECG interpretationSupports Apple Watch, Fitbit, Kardia, and moreAnalysis of 30+ heart rhythms
💪 Health & Fitness
(840)
free
11
ECG APPtitude
ECG APPtitude
ECG APPtitude
ECG reference guide
Free

This medical reference guide provides a comprehensive overview of ECG analysis and interpretation. It features high-quality ECGs from real patients, annotated with explanations of normal and abnormal findings. Content is organized by ECG features and diagnoses for easy learning and reference.

Comprehensive ECG reference guideHigh-quality patient ECGsAnnotated ECGs with text and illustrations
🏥 Medical
(7)
free
12
ECG EKG Interpretation Mastery
ECG EKG Interpretation Mastery
ECG EKG Interpretation Mastery
Read and Practice Cardiology
Free

Learn to interpret ECGs with this comprehensive app. It offers study materials, practice ECG strips, and essential clinical facts to help you understand abnormal EKGs and master 12-lead interpretations.

Master ECG interpretationComprehensive guides and tipsNo more big books
🏥 Medical
(671)
subscription
13
Heart Rate Monitor - Pulse BPM
Heart Rate Monitor - Pulse BPM
Heart Rate Monitor - Pulse BPM
Pulse: Step,Health HR&Oximeter
Free

Easily monitor your heart rate, track steps, and record vital health metrics like blood pressure and body temperature. Save and visualize your health data, set reminders, and share your progress with friends and family. This app provides convenient health insights for daily well-being.

Measure heart rate anywhereTrack steps, blood pressure, and body temperatureSave and visualize health data
💪 Health & Fitness
(128K)
freemium
14
Cardiac Diagnosis
Cardiac Diagnosis
Cardiac Diagnosis
heart health care
Free

This app uses your phone's camera and LED to measure and analyze heart rate and heart rate variability through photoplethysmography. It provides real-time monitoring and allows you to save and view your health data in record and graph formats.

Heart rate measurement via cameraHeart rate variability analysisReal-time continuous monitoring
💪 Health & Fitness
(6)
free with in-app purchases
15
Cardiograph Heart Rate Monitor
Cardiograph Heart Rate Monitor
Cardiograph Heart Rate Monitor
Instant Heartbeat Measuring
Free

Measure your heart rate instantly using your smartphone's camera and LED flashlight. Track your pulse history with clear graphs and intuitive guidance for accurate readings. Useful for exercise, stress, or general health curiosity.

Instant heart rate measurementUses smartphone camera and flashlightSaves measurement history
🏥 Medical
(732)
free with in-app purchases
16
ECG Pro | Road to Mastery
ECG Pro | Road to Mastery
ECG Pro | Road to Mastery
ECG Made Easy
Free

This app provides a vast library of interpreted ECG cases to help medical professionals and students enhance their electrocardiogram reading skills. It offers interactive learning modes and detailed case analyses, reducing the need for multiple reference sources.

Thousands of interpreted ECG casesInteractive learning modesDetailed case interpretations
🏥 Medical
(3.6K)
free with in-app purchases
17
Heart Rate Monitor - Pulse HR
Heart Rate Monitor - Pulse HR
Heart Rate Monitor - Pulse HR
Heart Beat & Pulse Tracker App
Free

Track your heart rate using your phone's camera. Get readings in seconds, view historical data, and access guided meditations and health articles. Integrates with Apple Health and offers a home screen widget for convenience.

Heart rate measurement in under 10 secondsPersonal dashboard with historyAdd tags and comments to measurements
💪 Health & Fitness
(9K)
free with in-app purchases
18
iCardiac: Heart Rate & Health
iCardiac: Heart Rate & Health
iCardiac: Heart Rate & Health
Heart Rate, Blood Pressure App
Free

Monitor your heart health and overall well-being with advanced tracking and AI-powered insights. Analyze heart rate, blood pressure, and mood to understand your body's signals and receive personalized health guidance.

Precise heart monitoring (HR, HRV)Blood pressure, temperature, SpO2 trackingMood and emotion correlation
💪 Health & Fitness
(28K)
free with in-app purchases
19
Humeds
Humeds
Humeds
Smart ECG Monitoring
Free

This medical app works with a specific ECG device to record and monitor heart rhythms. Users can send ECG signals and receive detailed PDF reports with medical advice.

ECG signal recordingHeart rhythm monitoringPDF report generation
🏥 Medical
(4)
free
20
ECG heart analyze - watch
ECG heart analyze - watch
ECG heart analyze - watch
EKG, HRV, Stress monitor
Free

This app analyzes heart rhythm data from your Apple Watch to provide insights into atrial fibrillation, HRV, stress, and energy levels. It offers a holistic health snapshot and personalized recommendations for better well-being.

Atrial Fibrillation vs. Sinus Rhythm analysisHRV analysis for cardiovascular healthStress and energy level insights
💪 Health & Fitness
(1.5K)
free with in-app purchases

FAQ about Arrhythmia

What are the best arrhythmia apps for iPhone?
arrhythmia tops our arrhythmia apps ranking as of July 2026, with a 4.2-star average from 87 App Store ratings, and it's free to download.
Yes — 20 of the top arrhythmia apps we rank are free to download, including arrhythmia and Cardiio: Heart Rate Monitor.
arrhythmia has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 200+ arrhythmia apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
This app provides a platform to practice reading and interpreting EKGs specifically in lead II. It offers realistic simulations of various cardiac rhythms, allowing users to hone their diagnostic skills through study and game modes.
Key features include a Study Mode where you can select and compare specific rhythms with brief descriptions, and a Game Mode to challenge your identification skills with randomly presented rhythms. Rhythms can be customized, and their rates, amplitudes, and widths are dynamically set for realism.

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