Do you live near a Potbelly Sandwich Shop? For a limited time only, they are offering you a FREE Sandwich when you download their mobile app (iTunes or Google Play) and use it to pay for your first order! Simply download the app and click the “perks tab” on the bottom. It’ll automatically be redeemed when you pay with your app. You do also have the option to turn the offer ‘off’ to save it for a later time. Go here for their locator.