Shake Shack Offers Free Burger On One Condition

(RTTNews) - Shake Shack is offering a free ShackBurger to celebrate the launch of its mobile ordering app for iOS.

In order to get a free ShackBurger, guests need to download the Shack App, create an account and use the promo code "shackappy" at checkout.

The fast food chain's new Shack App was "developed to elevate the in-Shack guest experience, resulting in shorter pick up times and convenient mobile ordering."

Customers can now use the app to order food from their phone. They will be able to pick their food, choose an available pickup time and it will be cooked-to-order and timed to their arrival.

"The Shack App brings a whole new way to experience Shake Shack for our guests—meeting them where they are, when they want, on their terms," said Randy Garutti, CEO of Shake Shack. "Our initial test and rollout have gone very smoothly, and I am thrilled to share that you can now order ahead at nearly all of our U.S. Shacks."

Shake Shack initially began as a hot-dog cart in Madison Square Park in New York. In 2004, restaurateur Danny Meyer opened a kiosk-style Shake Shack within the park. Its popularity steadily grew and is currently one of the fastest-growing food chains in the country. The company prides itself and emphasizes its use of all-natural 100% angus beef that is also completely free of hormones and antibiotics.