Instant Heart Rate: HR Monitor

Heart rate monitor apps don't need to be complicated—Instant Heart Rate uses your phone's camera and flash to measure your pulse accurately in under 10 seconds, no wearable device required.

Trusted by over 35 million users worldwide and validated in heart research at UCSF, this award-winning app transforms your smartphone into a clinical-grade heart rate monitor. Simply place your finger on your phone's camera lens, and advanced blood flow detection technology instantly calculates your beats per minute with the precision cardiologists rely on for clinical trials at Stanford. Whether you're checking your resting heart rate after sleep or monitoring your pulse during intense workouts and training, you get real data without heart rate straps or chest monitors.

Understand what your numbers mean. Beyond basic pulse measurement, track your stress levels and identify which heart rate zone you're currently in—resting, moderate, or peak. This insight helps you optimize your training intensity and recognize when your body needs recovery. Watch patterns emerge over time as the app logs your measurements, revealing trends in your cardiovascular health and fitness progression.

The simplicity is deceptive. Instant Heart Rate functions like a pulse oximeter, detecting subtle changes in blood flow through your fingertip to deliver measurements as accurate as clinical devices. No calibration needed, no subscription required—just consistent, reliable heart rate data at your fingertips. Featured by CNN, The New York Times, The Guardian, Chicago Tribune, and countless health and fitness publications, the app has earned the #1 position in heart rate monitoring across the United States, United Kingdom, Japan, Australia, Germany, France, China, Russia, Canada, and numerous other countries.

Whether you're an athlete fine-tuning your cardio training, someone managing stress and wellness, or simply curious about your cardiovascular health, this tool puts clinical-quality measurements in your pocket. No equipment to buy, no subscriptions to pay—just download Instant Heart Rate: HR Monitor and start measuring your pulse today.