Cardiogram is a private, real-time heart rate monitor and BPM tracker designed for Android users who want accurate heart rate data without subscriptions, cloud services, or unnecessary complexity.
Monitor your heart rate during workouts, cardio sessions, recovery, or daily activity using compatible Bluetooth Low Energy (BLE) heart rate monitors. Store your data locally and sync with Health Connect while maintaining full control over your health information.
Unlike many fitness apps, Cardiogram works without accounts, data collection, or cloud synchronization. Your health data stays on your device, where it belongs.

REAL-TIME HEART RATE & BPM TRACKING
Track live heart rate and BPM from compatible Bluetooth heart rate monitors. Whether you're running, cycling, training indoors, or monitoring exercise intensity, Cardiogram provides real-time feedback to help you stay in your target heart rate zone.
Perfect for:
• Running
• Cycling
• Walking
• Cardio training
• HIIT workouts
• Endurance training
• General fitness tracking
PRIVACY FIRST
Your health data belongs to you.
• No account required
• No cloud storage
• No tracking
• No data selling
• Local data storage
Cardiogram is built for users who value privacy as much as accuracy.

HEALTH CONNECT INTEGRATION
Sync your heart rate data with Health Connect and keep your fitness and wellness information in one place.
Cardiogram can share heart rate data with Health Connect, making it available to compatible health and fitness apps. Maintain a complete view of your workouts, activity, and health metrics across your Android ecosystem.
HEART RATE ZONES FOR SMARTER TRAINING
Understand workout intensity instantly with color-coded heart rate zones:
• Fitness
• Fat Burn
• Aerobic
• Anaerobic
• Maximum Effort
Monitor your training effort in real time and optimize workouts based on your heart rate.

WIDE BLE SENSOR COMPATIBILITY
Connect compatible Bluetooth heart rate monitors from leading brands including:
• Polar
• Garmin
• Wahoo
• CooSpo
• Magene
• Other BLE heart rate monitors
Ideal for runners, cyclists, gym users, and fitness enthusiasts who rely on accurate heart rate monitoring.

FAST, RELIABLE, AND BATTERY FRIENDLY
Cardiogram is optimized for efficient performance during long workouts and extended monitoring sessions. Quickly connect to your heart rate monitor and focus on your training without unnecessary distractions.

BUILT FOR FITNESS AND DAILY MONITORING
Use Cardiogram to:
• Monitor workout heart rate
• Track cardio intensity
• Stay within target heart rate zones
• Observe recovery trends
• Record heart rate sessions
• Review heart rate history
Simple, accurate, and distraction-free heart rate tracking.

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