McDonald’s (MCD) is offering a free deal that everyone can take advantage of. The fast-food chain announced that it is giving away a free medium fry every Friday through June 28.

The Free Fries on Fry Day promotion starts Friday and is only available to customers that use McDonald’s mobile app to order and make a minimum purchase of at least $1.

The McD app needs to be downloaded and registered prior to use. It can only be used for one free medium fry each Friday. The offer is also only valid at participating McDonald’s locations.

McDonald’s offers curbside pickup, delivery, and drive thru ordering, and recently begun reopening up its dining rooms in select restaurant locations amid the coronavirus pandemic.

The company has implemented a series of safety measures to ensure that customers are safe when dining in its restaurants, including closing off some tables to promote social distancing and modifying the self-serve beverage offering.

Employees will also wear masks and gloves and be behind protective barriers. Additional cleaning and sanitation will take place, and all play areas will be closed.

Shares of McDonald’s stock were up 0.37% as of 3:13 p.m. EDT on Thursday.

French Fries
French fries being made at a McDonald's store in Miami, Florida, April 25, 2017. Getty Images