Publix has a new digital coupon available for a FREE box of Apple Cinnamon Chex Cereal (up to $4.17) available to load for a limited time. Coupons expires 12/31/2021. Go here and register or log in then click the "Clip Coupon" button to save it to your account. To redeem your clipped coupon, simply enter the phone number associated with your account at Publix when you check out.