FREE 20oz Coca-Cola when you Register in the Circle K Mobile AppTaste the feeling of summer with Circle K. The summer is upon us and Circle K wants to make sure that you stay hydrated. Come in to your local Circle K to receive a FREE 20oz Coca-Cola when you download the Circle K mobile app and fully register by completing your profile. We cannot wait to see you soon and Share a Coke with you! Offer is valid 5/2/18 - 9/4/18 at participating locations. Click the link below to download the Circle K app today!