Heart Graph vs Heartool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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Knowing your current heart rate is useful, but seeing in real time how it varies over a longer period tells you much more, especially when you want to understand how your body is responding to a training plan. Heart Graph suits all types of aerobic exercise including running, cycling, rowing or gym work, or everyday heart rate monitoring for general health. Heart Graph records new data and shows your heart rate graph in real time, and also imports existing data from Apple Health. Compare previous sessions to see how your body is changing over time: directly compare the graphs of equivalent sessions, view statistics such as max, mean and resting heart rate across sessions, or see the time spent in each heart rate zone 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 Bluetooth sensors, Apple Watch and AirPods * No ads * Review your sessions offline to spot trends in your data * Integration with Apple Health: import existing workout data and store new workouts (importing a chosen time period of up to 24 hours is currently free - a limited-time offer) * Maximise the graph area on iPhone using landscape orientation * Group related sessions with your own notes, then search for sessions matching those notes * Record a standard Reference Set at the start of each session to see how your body is really doing; if your heart rate is elevated, 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 enables the Premium Features: more in-depth analysis tools and the ability to design your training sessions in the app. Planned Workouts split a session into small pieces, for example sets at the gym or intervals on a bike. As you exercise, Heart Graph keeps 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 the next set can be a simple time gap (“wait 30 seconds”) or based on heart rate to allow recovery before continuing (“wait until heart rate is below 120bpm”), giving a structured plan that adapts to how your body is responding each time. Premium Features include: * View and analyse the time spent in each of five configurable heart rate zones * Add annotations to the graph, during recording or at any time afterwards, to help identify key events * Heart rate alarms when your heart rate changes zone or goes above or below configurable thresholds * Spoken heart rate at regular intervals or on zone changes, so you needn't watch the screen * Directly compare graphs for equivalent sessions * Sync your sessions between your iPhone and iPad via iCloud Drive * Automatically import new workouts and a chosen time period every day from Apple Health, or bring in months of past data in one go * 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 - the app keeps count so you never lose track * Import Garmin TCX and GPX format files * Export data to TCX, Polar HRM or CSV files for further analysis, e.g. in Excel * Export one or more sessions as a PDF, complete with summary, heart rate graph and a table of your annotations, ready to share or print Heart Graph requires an external sensor to record heart rate, such as: * A Bluetooth (BTLE) sensor such as the Wahoo Trackr / Polar H10 chest straps, or Mio Alpha watch * An Apple Watch or AirPods Pro 3 * 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.
Heartool
Transform your phone into a fitness tracker to monitor workouts with live heart rate data. Analyze training progress with professional charts and gain insights into your health and cardio condition. Integrates with wearable devices and Apple Health.
- Live heart rate tracking
- HRV biofeedback
- Cardio health analysis
- Workout progress charts
- Calorie burned tracking
- Health data synchronization
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Turn your phone into a fitness tracker with Heartool, to record your workouts with heart rate data. It is a concise and most accurate way to measure your training progress, to reach your fitness goals. Working with wearable devices to train in real time. For heart rate sensor recommend: www.fitcare.com Heartool gives you: 1.Tracking your live heart rate at right intensity for maximum results. With professional chart records, users could see their exercise effects when and after their training. 2.HRV biofeedback. Based on the heart rate sensor R-R interval data, together with professional algorithm, Heartool could help you to know your health and training status. 3.Cardio health condition. Based on the waveform (ECG) data and through the professional algorithm, Heartool could help you to discover hidden heart health hazards in time. HealthKit 1. Heartool Will share the record (heart rate) to the Apple's health applications after each exercise 2. Because the privacy of your health data is very important, the user must agree to authorize Apple Health in "Set up -> Authorization" in the Heartool APP before sharing the heart rate data to your Apple Health app. 3. Heartool Connect to a healthy feature supports iPhone 6 and above devices, and the system version is iOS9.0 and above. Main features: 1.Personalized heart rate zone setting, sync to the training sensor. 2.Calories burned checking based on the workouts. 3.Storing data import. If sensors not connected to the App, data could sync to the App after training. 4.Daily health management with cardio status and stress reflect. 5.Health data record, review a summary of the result from your entire workout history.
Screenshots
Verdict
The clearest difference is review sentiment: Heart Graph at 87% against Heartool's 21%. Heart Graph also leads on rating (4.5 vs 3.1) and update cadence (every 2 weeks vs every 4 months). Heartool's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 15.0). On price 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
Both are free to download. Heart Graph sells 2 one-off in-app purchases. Heartool asks for nothing beyond the download.
Heart Graph holds the better App Store score, 4.5 against 3.1. That said, the two scores are not equally well evidenced: Heart Graph has 1.2K ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 87% of Heart Graph's written reviews are positive against 21% of Heartool's.
Heart Graph ships an update every 2 weeks, Heartool every 4 months. The most recent releases landed on October 17, 2026 and October 10, 2026 respectively.
| Parameter | Heart Graph | Heartool |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (1.2K ratings) — better | 3.1 (14 ratings) |
| Positive reviews | 86.5% of reviews — better | 21.2% of reviews |
| Number of ratings | 1.2K — better | 14 |
| Update frequency | Every 2 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 33 MB | 24 MB |
| Age rating | 4+ | 12+ |
| Developer | Smoky Cat Software Ltd. | Shenzhen Onecoder Technology Co., Ltd. |
Customer experience
Heart Graph
Heartool
Bugs and requests
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
Heartool
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Heart Graph
- Support Ad-Free Software$0.99
- Premium Features$2.99
Heartool
No in-app purchases
Questions
Is Heart Graph free?
Is Heartool free?
Which has better reviews, Heart Graph or Heartool?
Do Heart Graph or Heartool have ads?
Which is updated more often, Heart Graph or Heartool?
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