- Used in heart research at UCSF! You DONT need a dedicated heart rate monitor to get your pulse, download Instant Heart Rate today and use your cameras flash to see how healthy you are! With over million users, the award-winning Instant Heart Rate app is all over the web. Featured in: CNN, The New York Times, Chicago Tribune, The Guardian, and many more. and many more. Instant Heart Rate is continuously rated as the worlds best mobile heart rate measurement app and is trusted by Stanfords leading cardiologists for use in clinical trials. Measure accurately your pulse and heart beat zone with your heart rate & health monitor after sleeping or during workouts & training. Instant Heart Rate doesn't require heart rate straps. Instant Heart Rate functions similarly to pulse oximeters, detecting change in your finger to provide accurate heart beat measurements. Cardio workout monitoring to optimize exercise and track progress pre- and post-workout. Use HR as cardiovascular measurement. How to use Instant Heart Rate, heartbeat counter, to measure your heartbeat accurately? Place finger on phones camera to show resting heart rate. Blood circulation to your finger tip may be altered if press hard on camera lens. How often should you use Instant Heart Rate? For accurate measurement, Instant Heart Rate should be used daily to measure heartbeat or pulse. Recommended to tag your heart rate after sleeping or during workouts to separate resting heart rate from workout heart rate. What is a normal heart rate or heartbeat? According to American Heart Association (AHA) and the Mayo Clinic, a normal resting heart beat ranges from to beats per minute (BPM). Heart rate can be affected by stress, anxiety, depression, emotions, activity level, fitness level, body composition, and medication use. Knowing heart rate is important heart-health gauge and cardiovascular metric. Heart rate variability is important in measuring stress on your body. - Instant Heart Rate is for entertainment purposes. Consult your doctor or primary care physician if you require first aid, have a medical emergency, heart attack, or cardiac event (when CPR required). - Resting heart rate detection not intended to be used as a medical device or as stethoscope. - Heart beat detection does not detect blood pressure. - Resting heart beat not intended for baby heart rate. Use others specific for baby heart beat. - Heart rate monitor may cause hot LED flash.