Description: For a limited time, get a $7 discount on your orders of $12 or more for new customers when you order in the Grubhub app. Enter this Grubhub promo code at checkout. Grubhub: Grubhub Inc. is an American online and mobile prepared food ordering and delivery marketplace that connects diners with local takeout restaurants. The company is based in Chicago and was founded in 2004. As of 2019, the company had 19.9 million active users and 115,000 associated restaurants across 3,200 cities in the United States.