How to use Pulse Monitor Beat & Oxygen Application? Evertise 31 May 2021, 20:24 GMT+10 With the help of a Pulse monitor app, you can measure your heartbeat and oxygen level anytime anywhere. The app has built-in sensors which can record your heart rate and oxygen concentration easily. The app, however, works on Samsung devices (like Galaxy Note and Galaxy S6 and above ranges) with these built-in sensors. The app employs advanced algorithms to measure the oxygen saturation employing the raw infrared and the red signal output by the sensor. The free version of the app allows 3-5 free measurements per day and would be interspersed with displayed ads.