This deal has ended.
Quick! Hurry up and download the Jack in the Box mobile app because you can enjoy a free regular shake with any app purchase. This offer is valid on mobile app orders only, and valid through February 18th. Must add a regular shake (any flavor) to your order cart along with another item in order to redeem this offer. One per customer.
Hurry up and download the Jack app because this offer will literally be gone tomorrow, and you will not be able to get it back.