To score a free kids meal with a $1 purchase, simply create an account on Burger King's website or download their app (both free). BK is also currently offering Family Bundle Meal Deals for just $12.99 that include 3 Whopper Sandwiches, 3 Cheeseburgers, and 3 Small French Fries. (Bonus: first-time app users will also get a free Whopper on their first order with purchase)