FREE ShackBurger at Shake Shack
If you have an iOS device, you can get a FREE ShackBurger at Shake Shack 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.