Dunkin' is giving away a free classic donut with a purchase of any drink every Friday in March, signaling the latest escalation among fast food rivals for the breakfast battle. In addition to plant-based meat alternative sandwiches, Dunkin' has recently bolstered its breakfast offerings with Go2 breakfast deals, egg-based bowls and even a bag of bacon. Wendy's and McDonald's have also pushed nationwide free giveaways to promote their respective apps. Wendy's, which launched its breakfast menu nationwide earlier this week, is giving away a free Chicken Biscuit sandwich with purchase on mobile orders. McDonald's offered free Egg McMuffin sandwiches last Monday.