FREE ShackBurger at Shake Shack

Download The Shack App for iOS, create an account and use the promo code shackappy at checkout for a FREE single shackburger at Shake Shack.

The coupon is redeemable at any U.S. Shack until Tuesday, February 28th, 2017. No minimum purchase is necessary.

Please follow this link to get the freebie:

FREE ShackBurger at Shake Shack