Shake Shack has launched their new mobile ordering app for iOS, Shack App, and first time users will receive a free single ShackBurger for signing up. The app allows users to order their food for specific pick-up times, allotted in fifteen-minute increments.

New users only need to download the app, create an account, and use the promo code “shackhappy” at checkout.

The offer is only available until Tuesday, February 28, 2017.

Brendan O'Connor

Editor in Chief of

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