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FREE ShackBurger at Shake Shack

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FREE ShackBurger at Shake Shack | Comments 0 | MOBILE FRIENDLY

If you have an iOS device, you can get a with the promo code! Click here to download the Shake Shack iOS app then create an account. Add one Single ShackBurger to your cart and enter promo code: shackappy at checkout to make it free. You will need to enter payment info but you will not be charged as long as your total is $0.00. Expires 2/28.

About Shake Shack

Shake Shack is an American fast casual restaurant chain based in New York City. It started out as a food cart inside Madison Square Park in 2004, and its popularity steadily grew.

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