Jack in the Box Free Jr Cheeseburger with $1 App Purchase

• Jack in the Box now offers National Cheeseburger Day event, on 9/18, place an order in the app with a single purchase of $1 or more, and get 1 Jr. Cheeseburger free.
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Editor's Pick: On 9/18 National Cheeseburger Day, spend just $1 or more on the Jack app and get a free Jr. Cheeseburger. Download the app, sign up, and place your order—the free burger is automatically added at checkout. It's an even better deal when you pair it with other items. If you love cheeseburgers, set a reminder now and don't forget to use it that day.