Use the McDonald’s App to score an offer valid for a Buy 1 Get 1 FREE McDonald’s Filet-O-Fish Sandwich! You’ll have to use mobile order and pay. Just click on the “View Deals” section of the app to find this offer, customize your order, and apply the coupon and pay. Valid through May 13th.
McDonald’s: Buy 1 Get 1 FREE Quarter Pounder w/ Cheese (Mobile App)
