Sonic Drive-In: Get a FREE Cheeseburger with any app purchase
This June, Sonic Drive-In has a special offer for all customers: For a limited time, download the Sonic Drive-In app to your mobile device and use it to obtain a free cheeseburger with any app purchase. No coupon is needed for this promotion. Offer will be valid through July 31st, 2022. Terms and conditions may apply.