Free ThickBurger at Carls Jr. and Hardees

download the Superstar Rewards app. Every time you use it to check in at a Carls Jr. or Hardees location youll earn 100 points. You dont have to purchase to check in, your phone just has to see that youre at a Carls Jr or Hardees location based on the GPS location. You can get a free six dollar burger with every 1,000 points that you earn, and the app allows you to check in twice daily(every 12 hours)