Heart rate monitor Android App

The description of Heart rate monitor: important:for correct reading hold your index finger on the camera lens steadily and lightly for the whole measuring process. Don t move your finger until measuring is complete breath normally! Heart rate is measured by detecting change in color on your fingertip that changes with every heart beat due to blood flow. Not using app correctly will result in false reading. Please don t write bad comments if you did not use app correctly! Heart rate monitor app measures your heart rate by analyzing blood flow on the tip of your finger. Heart rate monitor is a cardiograph for your android device. Results are instant. Check your heart rate in real time. How to use? Lightly place the tip of your left hand index finger on the camera lens so it completely covers the lens and press start. Hold until the measurement is complete. Hold your phone steady. If your camera does not have flash measure your heart rate in well lit environment..