Burger King is offering their Whopper for 1-cents through their iOS or Android app for a limited time. To get this deal, you must be within 600 feet of a McDonalds to unlock the offer and then you will be able to place a mobile order through the app for pickup at your nearest Burger King location.

Burger King is also offering their Crispy Chicken Sandwich for $1 again through their mobile app and it’s located in the Coupons Section. [Store Locator]