It is a manual method, but accurate.
First, take your phone with right hand.
Left index/middle finger, letting right wrist under the thumb side.
Or
press the left neck position.
And then Feeling the pulse to tap the heart image with your thumb.
9Apps 4.9
![Heart Rate App [NEW] *2020 screenshot 5](https://i.ytimg.com/vi/1GH6VHnLhYo/mqdefault.jpg)
