Comparison

iCardio Workout Tracker vs Heart Graph

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

Head to head
About

iCardio Workout Tracker

This app helps you train smarter by using your heart rate data. It tracks workouts, provides real-time feedback, and integrates with wearables and Apple Health to offer insights into your performance and progress.

Highlights
  • Heart rate zone tracking
  • GPS route mapping
  • Voice coaching
  • Apple Watch & Health integration
  • Real-time workout sharing
  • Custom fitness assessments
Features
Read full description

iCardio – Smarter Heart Rate Training (Supports Bluetooth sensors, Apple Watch & Apple Health, and now AirPods Pro G3!) Track, train, and transform your fitness with iCardio, your all-in-one heart rate training companion. Whether you’re walking, running, cycling, or doing your favorite studio workout, iCardio helps you understand your heart, improve performance, and stay motivated. Train with Precision iCardio turns your heart rate into a powerful training tool. See your heart rate zones live as you work out, get instant feedback, and optimize every session to reach your goals faster — whether you’re training for endurance, weight loss, or general fitness. Connected Fitness, Simplified iCardio integrates seamlessly with Apple Watch and Apple Health, automatically syncing your workouts, calories, and key metrics like: * Heart Rate & Zones * Heart Rate Variability (HRV) * Resting Heart Rate Use iCardio as your fitness hub to bring together data from all your favorite Health-connected apps and devices — making it easier to track your overall wellness in one place. Comprehensive Tracking * GPS route mapping for outdoor workouts * Steps, calories, cadence, and power tracking * Custom Fitness Assessments to personalize zones * Routes & Routines to measure progress over time Key Features * Voice Coaching: Real-time cues to keep you on target * LiveTracking: Share your workout progress in real time * Goal Setting: Define and track personal fitness goals * Advanced Graphs & Analytics: Visualize heart rate, pace, and more * Web Sync: Review your data anytime, anywhere* Sleep, Weight, and Blood Pressure Device Compatibility Works with Apple Watch, Apple Health, and most Bluetooth fitness sensors — including Polar, Wahoo, Scosche, Viiiiva, POWR LABS, CooSpo, OrangeTheory, Garmin, and Moofit. Also supports power meters, cadence sensors, and Peloton® bikes. Free Features * Basic heart rate tracking * GPS & route tracking * Customizable voice coaching * Health metrics (weight, sleep, blood pressure) * Sync with Apple Health STAR Membership Unlock deeper insights with STAR Membership ($4.99/month or $29.99/year): * Advanced heart rate zone analysis * Speed and cadence sensor support * Personalized Fitness Assessments * Routes & Routines tracking * LiveTracking for real-time sharing * Group and community data sharing Subscription Details Payment is charged to your iTunes Account at purchase confirmation. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the current period ends. Renewal is billed within 24 hours before renewal at $29.99/year or $4.99/month. Any unused trial period is forfeited upon subscription purchase. Manage or cancel your subscription in your Account Settings at any time. Privacy Policy: fitdigits.com/privacy-policy.html Terms of Use: fitdigits.com/terms-and-conditions.html* Ad-free experience and more Train smarter. Recover better. Live stronger. Download iCardio today and make every heartbeat count.

About

Heart Graph

Track your heart rate in real-time and analyze trends over time. Understand your body's response to training and general health with detailed graphs and statistics. Import data from Apple Health for a comprehensive view of your fitness journey.

Highlights
  • Real-time heart rate graphing
  • Apple Health integration
  • Session comparison and statistics
  • Heart rate zone analysis
  • Planned workout design
  • Heart rate alarms
  • Background data recording
Features
Read full description

Knowing your current heart rate is useful, but seeing in real time how it varies over a longer period gives you much more information, especially when trying to understand how your body is responding to a training plan. Heart Graph can be used for all types of aerobic exercise including running, cycling, rowing or gym work, and of course you can also use it to study your normal heart rate for general health reasons. Heart Graph allows you to record new data and see your heart rate graph in real time, as well as importing existing data from Apple Health. Data from previous sessions can then be compared to give a deeper understanding of how your body is changing over time, for example by directly comparing the graphs for equivalent sessions, viewing statistics such as max, mean and resting heart rate across sessions, or seeing the proportion of time spent in different heart rate zones aggregated over weeks or months. (Note some features require a one-off In-App Purchase, as described below.) FREE features of Heart Graph include: * Display a real-time graph of heart rate against time on your iPhone or iPad * Support for both Bluetooth sensors and Apple Watch * No ads * Review your sessions offline to spot trends in your data * Integration with Apple Health: import existing workout data and store new workouts * Maximise the screen area for graphs on iPhone using landscape orientation * Group related sessions by adding your own notes, then searching for sessions matching those notes * Record a standard Reference Set at the start of each session to help determine how your body is really doing; if your heart rate is elevated, you may want to take it easy * Record data in the background if you want to use other heart rate apps (Bluetooth sensors) * Calculate calories burned, and set a calorie target for each session Beyond the basics, a single, one-off In-App Purchase will enable the Premium Features, giving you access to more in-depth analysis tools and the ability to design your training sessions in the app. These Planned Workouts split a session into small pieces, for example sets at the the gym, or intervals on a bike. When you’re exercising, Heart Graph will keep track of where you are in the session and what’s coming up next, alerting you when it’s time to stop or move on. The trigger for moving from one set to the next can be a simple time gap (“wait 30 seconds”), or be based on heart rate to allow a specific amount of recovery before continuing (“wait until heart rate is below 120bpm”). The outcome is a structured plan that adapts to how your body is responding each time you do that session. Premium Features include: * View and analyse the time spent in each of five configurable heart rate zones * Add annotations to the graph during recording to help identify key events * Heart rate alarms when your heart rate changes zone or goes above or below configurable thresholds * Import data from the Health app for custom time periods of up to 24 hours * Directly compare graphs for equivalent sessions * Compare statistics (such as max, mean and resting heart rate) across sessions * Record a session to explicitly measure resting heart rate while you relax * Audio rep counting so you never lose count - make a noise every time you complete a rep and the app keeps track of how many you’ve done * Import and export heart rate data from other apps or your computer using Garmin TCX format files * Import Garmin GPX format files * Export data to CSV files for further analysis in software such as Excel (email, Dropbox, etc) Heart Graph requires an external sensor to record heart rate, such as: * A bluetooth (BTLE) sensor such as the Wahoo Tickr / Polar H10 chest straps, or the Mio Alpha watch * An Apple Watch * An ANT+ sensor connected using the Wahoo Key DISCLAIMER: Heart Graph is not a medical device, and you must always seek a doctor’s advice before making any medical decisions.

Screenshots

iCardio Workout Tracker4 screens
Heart Graph4 screens

Verdict

The call

The clearest difference is review sentiment: Heart Graph at 87% against iCardio Workout Tracker's 63%. Heart Graph also leads on iOS requirement (15.0 vs 17.6). iCardio Workout Tracker's advantage is rating (4.8 vs 4.5). On price, ratings volume, update cadence and ads 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. iCardio Workout Tracker sells 4 in-app purchases, starting at $4.99 per month and Heart Graph sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

iCardio Workout Tracker holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 3.4K and 1.2K respectively. Written reviews complicate that: 63% of iCardio Workout Tracker's written reviews are positive against 87% of Heart Graph's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

iCardio Workout Tracker ships an update every 11 days, Heart Graph every 2 weeks. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

Scorecard3 real differences · 7 level
iCardio Workout Tracker versus Heart Graph: the parameters behind the verdict, then further details
ParameteriCardio Workout TrackerHeart Graph
PriceFreeFree
Rating4.8 (3.4K ratings) — better4.5 (1.2K ratings)
Positive reviews63.4% of reviews86.5% of reviews — better
Number of ratings3.4K — better1.2K
Update frequencyEvery 11 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod, Apple Watch — better
Requires iOS17.615.0 — better
Further details — not scored
Size85 MB33 MB
Age rating4+4+
DeveloperFitdigits IncSmoky Cat Software Ltd.

Customer experience

iCardio Workout Tracker

All ratings3,366 ratings
Positive96.6%
Neutral1.2%
Negative2.3%
Written reviews290 reviews
Positive63.4%
Neutral6.6%
Negative30.0%

Heart Graph

All ratings1,199 ratings
Positive88.3%
Neutral2.8%
Negative8.9%
Written reviews563 reviews
Positive86.5%
Neutral3.7%
Negative9.8%

User reviews

iCardio Workout Tracker

From 3.4K App Store ratings

What we love

  • 👍 Great app
  • 🚀 Accurate tracking
  • 💡 Customizable screens
  • 🚀 Reliable connection
  • 👍 Motivating

Room to improve

  • 🐛 Crashes and sync issues
  • 🔋 Battery drain
  • 🔒 Subscription model
  • 🐛 Inconsistent performance
  • 🐛 Sensor connection problems

Heart Graph

From 1.2K App Store ratings

What we love

  • 👍 Excellent for heart rate monitoring
  • 🚀 Reliable and accurate data
  • 💡 Customizable heart rate zones
  • 🔒 No data collection or ads
  • 👍 Simple and intuitive interface

Room to improve

  • 🐛 Occasional connectivity issues
  • 🐛 Calorie calculations can be inaccurate
  • 🔋 Battery drain on some devices
  • 👎 Limited free version, premium features require payment

Bugs and requests

iCardio Workout Tracker

Reported bugs

3 issues
  • Garmin ANT+ connectivity issues
  • Incorrect calorie/distance tracking
  • Unreliable heart rate monitoring

Requested features

5 requests
  • Lap/split time tracking
  • Multi-user profiles
  • Treadmill/elliptical integration
  • More customization options
  • Improved Apple Watch integration

Heart Graph

Reported bugs

2 issues
  • Workouts not always syncing correctly
  • App crashes or freezes on some devices

Requested features

4 requests
  • Add minimum heart rate to metrics
  • Integrate with more fitness apps and devices
  • Improve customization options for workout labels
  • Display heart rate on the workout selection screen

In-app purchases

4 purchases

iCardio Workout Tracker

Subscriptions3
  • Star Monthly$4.991 Month
  • Pro Plus$24.991 Year
  • Star$29.991 Year
One-time1
  • Plus$6.99
2 purchases

Heart Graph

One-time2
  • Support Ad-Free Software$0.99
  • Premium Features$2.99

Questions

Is iCardio Workout Tracker free?
iCardio Workout Tracker is free to download, with in-app purchases available.
Is Heart Graph free?
Heart Graph is free to download, with in-app purchases available.
Which has better reviews, iCardio Workout Tracker or Heart Graph?
iCardio Workout Tracker is rated higher. iCardio Workout Tracker averages 4.8 out of 5 from 3.4K ratings, while Heart Graph averages 4.5 from 1.2K ratings.
Do iCardio Workout Tracker or Heart Graph have ads?
Neither iCardio Workout Tracker nor Heart Graph shows ads.
Which is updated more often, iCardio Workout Tracker or Heart Graph?
iCardio Workout Tracker ships an update every 11 days, and Heart Graph every 2 weeks. Most recently, iCardio Workout Tracker was updated on September 23, 2026 and Heart Graph on September 24, 2026.

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