McDonald's is giving away free fries. Here's how to get some. (MCD)
7:10am PDT - July 13th, 2018 national french fry day - Business InsiderMcDonald's is giving away free French fries on Friday, July 13 in celebration of National French Fry Day. Customers need to download and register for the McDonald's app, and then use the app to make a purchase. McDonald's isn't the only chain celebrating Nati…