McDonald's Offers a Free Double Cheeseburger with a $1 Mobile App Purchase on September 18

For one day only on September 18, 2022, app users at McDonald’s can claim a free Double Cheeseburger with a minimum purchase of $1 through the McD mobile app.

This deal will be available to celebrate National Cheeseburger Day and can be redeemed once per McDonald’s in-app account.