Burger King offering 1-cent Whoppers 'at' McDonald's

(WVLT) -- Burger King's new promotion is taking folks inside its biggest competitor--McDonald's.

The chain's "Whopper Detour" deal is giving customers Whoppers for one penny; however, customers have to use the restaurant's app to order, and they have to be at a McDonald's to do it.

According to Business Insider, Burger King's app will recognize the user's location as being at a McDonald's and unlock the penny deal. After you place an order for the Whopper, the app will "detour" you away from McDonald's to the closest Burger King.

The deal began Tuesday and runs through Dec. 12. For more information, go to Burger King's a href="https://www.bk.com/whopperdetour">website.