How to send data from my pulse sensor to Smartphone?

[Blynk_Coeur]

@lemonnoob

how is connect your pulse sensor to arduino board ?
is it a SEN-11574 from Sparkfun ?

Pulse sensor with arduino uno+blynk

[Updated] hi guys i need your help please. Ok so i am using pulse sensor like https://cdn.sparkfun.com//assets/parts/7/5/5/9/11574-02.jpg i need to measure the heart rate beat per min to display on my Blynk terminal widget… i keep on getting extreme value and the sensor doesn’t seems to be responding according to my finger placement… if i didn’t put my finger onto the sensor , it still showing beat per min … and the result seems to be weird… showing 1.xx beat per minute or 4.xx beat per minu…