Cardiogram: HR Monitor

Cardiogram is a private, real-time heart rate monitor and BPM tracker designed for iPhone, Apple Watch, and Apple Health users. Monitor your heart rate during workouts, daily activity, recovery, or rest - with all data stored securely on your device.

Unlike subscription fitness apps, Cardiogram works without accounts, cloud sync, or data sharing, giving you full control over your health information.

Real-Time Heart Rate & BPM Tracking
Track live heart rate and BPM using Apple Watch or compatible Bluetooth Low Energy (BLE) heart rate monitors. Perfect for workouts, cardio training, recovery tracking, and everyday health monitoring.

Privacy-First by Design
Your health data stays private.
• No account required
• No cloud storage
• No tracking or data selling
• Data stored locally on your iPhone and Apple Health
Built for users who want accurate heart rate tracking without compromising privacy.

Apple Health Integration
Automatically sync heart rate data with Apple Health for a complete view of your fitness and wellness metrics alongside workouts, activity, and recovery trends.

Heart Rate Zones for Smarter Training
Visualize workout intensity instantly with color-coded HR zones:
• Fitness
• Fat Burn
• Aerobic
• Anaerobic
• Maximum Effort
Optimize cardio sessions, endurance training, and performance improvement using real-time feedback.

Wide BLE Monitor Compatibility
Connect external heart rate sensors including:
• Polar
• Garmin
• Wahoo
• Other Bluetooth heart rate monitors
Ideal for athletes, cyclists, runners, and fitness enthusiasts.

Efficient & Battery Friendly
Cardiogram is optimized for long training sessions with minimal battery usage, making it reliable for extended workouts and daily monitoring.

Built For Everyday Health & Fitness
Use Cardiogram to:
• Monitor workout heart rate
• Track cardio intensity
• Observe recovery trends
• Monitor stress and daily activity
• Record heart rate sessions anytime

Simple, accurate, and distraction-free heart rate tracking.

Disclaimer: Cardiogram is not a medical device and does not diagnose, treat, or prevent medical conditions. Always consult a healthcare professional regarding health concerns.

This update improves Apple Watch connectivity and overall performance.

What’s new:
• Faster and more reliable Apple Watch connection
• Improved real-time heart rate streaming stability
• Smoother switching between Apple Watch and BLE monitors
• Better performance during workouts
• Optimized battery efficiency
• General bug fixes and improvements

Cardiogram remains private and fully offline — no accounts, no cloud, no tracking.