Here’s a really easy way to get a free Shake Shack burger
By Sarah Sutton • January 24, 2017
Shake Shack has a new promotion that makes getting a free burger almost as easy as eating it. The restaurant is celebrating the launch of its new mobile-ordering app by gifting everyone who downloads it a free burger. You can get yours by downloading the app, creating an account and using promo code “shackappy” at checkout.