Cardio Chart vs HeartRateHub
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cardio Chart
Visualize your heart rate during workouts with detailed graphs. Track maximum and average heart rates to understand exercise impact. Requires heart rate data recorded to the Health app.
- Heart rate workout graphs
- Maximum heart rate display
- Average heart rate display
- Health app integration
- Workout data visualization
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Cardio Chart lets you view a graph of your heart rate from any workout recorded on your device. See any peaks in your heart rate and get a sense of how your exercise is affecting your heart. Cardio Chart also displays your maximum and average heart rates for a workout. Graphs are only shown for workouts that include heart rate data such as those recorded with an Apple Watch or other pulse monitoring accessory. Note: • In order to display heart rate charts, you must have a device capable of recording heart rate data to the Health app (like an Apple Watch or other accessory). • Cardio Chart integrates with the Health app on your iPhone to retrieve the data it displays. It can display your Workout and Heart Rate information.
HeartRateHub
This app helps runners train smarter by utilizing personalized heart rate zones. It integrates with Apple Watch to provide real-time feedback and allows for the creation of custom or pre-set interval workouts for improved endurance and speed.
- Custom heart rate zone creation
- Flexible interval workout design
- Predefined zone templates
- Apple Watch real-time feedback
- Speedometer-style visual display
- Data-driven goal-oriented sessions
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HeartRateHub: Precision Heart Rate Zone Training for Runners HeartRateHub is the go-to training app for runners who want to train smarter using heart rate zones. Seamlessly integrated with your Apple Watch, it transforms your workouts into data-driven, goal-oriented sessions that help improve endurance, speed, and recovery. Whether you are preparing for a race or simply want to make each run more effective, HeartRateHub gives you complete control over your heart rate-based training. Key Features Custom Heart Rate Zones Create personalized heart rate zones on your iPhone by setting durations and minimum and maximum BPMs. Align each workout to your fitness goals with precision. Flexible Workout Patterns Design interval workouts with multiple heart rate zones. Create structured routines with controlled warmups, challenging peaks, and effective cooldowns. Predefined Zone Templates Access a library of popular heart rate training patterns such as 30-20-10 intervals and Fartlek runs. Add them to your personal library to start training immediately. Apple Watch Integration All workouts sync automatically to your Apple Watch, delivering real-time feedback and alerts as you move between heart rate zones. Clear Visual Feedback Stay focused with a speedometer-style display on your Apple Watch. Instantly see how your current heart rate compares to your target zone. No Limits, Completely Free All features are available without a subscription or paywall. HeartRateHub is designed to be fully accessible to every runner looking to improve their training through heart rate guidance. Why Choose HeartRateHub HeartRateHub is more than a fitness tracker. It is a training companion built for those who value the power of precision. Unlike generic running apps, HeartRateHub allows you to create intricate heart rate-based workouts, follow elite training templates, and monitor your zone adherence in real-time. Whether you are an experienced runner or just starting to explore heart rate training, HeartRateHub gives you the tools to train with structure and intention. Download HeartRateHub today and experience the difference of training with clarity, focus, and complete control over your heart rate zones. Terms of service & privacy policy: https://basamasa.github.io/eula.html https://www.termsfeed.com/live/aab51974-f8da-4ee1-8c9d-4004367a3186
Screenshots
Verdict
The clearest difference is in-app purchases: Cardio Chart at none against HeartRateHub's 3. HeartRateHub's advantage is update cadence (every 4 months vs every 25 months). On price, ads, device support and iOS requirement 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. HeartRateHub sells 3 in-app purchases, starting at $1.99 per 7 days. Cardio Chart asks for nothing beyond the download.
Cardio Chart ships an update every 25 months, HeartRateHub every 4 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.
| Parameter | Cardio Chart | HeartRateHub |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 25 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 0 MB | 7 MB |
| Age rating | 12+ | 4+ |
| Developer | Clever Armadillo LLC | Enzer Erkin |
Customer experience
Cardio Chart
HeartRateHub
In-app purchases
Cardio Chart
No in-app purchases
HeartRateHub
- Weekly Subscription$1.997 Days
- Monthly Subscription7 Days trial$3.991 Month
- Yearly Subscription7 Days trial$24.991 Year









