Use DinDin Vivo app is very simple, you have 2 types of offers, coupons and loyalty cards.
Coupons: To use coupons, click on your city and look for the cupon that you want to youse.
To save the cupon, ask for instructions to the employees at the store.
Loyalty cards: Buy something at the store that you want, if you have the loyalty card, ask to the employee to check the password.
(Old Ticket Dinheiro Vivo)