"Let’s get app-y! Shake Shack® is proud to announce the first-ever mobile ordering Shack App for iOS is now available nationwide. To celebrate the occasion, Shake Shack is giving away a free single ShackBurger® to each guest who downloads the new Shack App, redeemable at any U.S. Shack (‘cept airports, stadiums and ballparks) until Tuesday, [...]

1. Download the App on your Apple or Android device 2. Open and register for the App through the step by step process 3. After Registering, you will have to Activate your account through a confirmation email sent to you 4. Then sign back in to the app and look for your FREE BIG MAC [...]

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