This projects aims to use the pulse sensor (which is easily available now) with arduino uno and Bluetooth HC-05 module, The pulse sensor is placed on the finger and it measures the heart rate and then sends the heart rate to android mobile via bluetooth device, There is no special Android app is required, any bluetooth terminal app will work perfectly. This project can be used to develop Wearable for mobiles or wrist watches.
Attached code
open PulseSensor_wt_BT.ino
all the pin connections are explained in the code