Shake Shack celebrates the national launch of their first-ever mobile ordering app by offering a free single ShackBurger to each fan who downloads the new Shake App.
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In order to take advantage of the free burger offer simply download the Shake App, create an account and use the promo code “shackappy” at the checkout. Just take note that the offer is limited to first-time users.
The ShakeBurger (Single) features a 100 percent all-natural Angus beef patty topped with cheese, lettuce, tomato and ShackSauce.
The promo code is valid for one single ShackBurger and can be redeemed at any US Shake Shack (excluding airports, stadiums and ballparks) through Tuesday, February 28, 2017.
Image – Shake Shack