Turn your smartphone into comfortable personal heart rate monitor. Measuring is based only on gyroscope sensor. How to measure your heart rate: * Sit on a chair and put the phone on your leg (quadriceps) or on heart side of chest or into armband * Relax and hold still, keep your hands along side of your body * Wait for detection of heart rate, it takes 10 - 15 s * That's all! Application is using google subscription licensing with 14 days free trial period. All features are available during f