In this app:
a) User will create account and select the charity name.
b) User will run or walk and add steps on his/her account.
c) 20000 = $1.00
d) As per users step money will be send to his/her selected charity
e) User just need to focus on his/her steps completed and app owner will send equivalent money to selected charity
Disclaimer
"Continued use of GPS running in the background can dramatically decrease battery life."