Auntie Anne’s is rewarding members of its My Pretzel Perks mobile application and fueling app downloads as well as store visits by offering users a free Original or Cinnamon Sugar Pretzel to commemorate National Pretzel Day during the weekend of April 24-26. Fans of the pretzel brand must download the My Pretzel Perks app by 11:59 p.m. on April 23 to be eligible to receive the free treat, which is redeemable in-store on April 24, 25 and 26. The food marketer also hopes to drive awareness of its products as the promotion coincides with National Pretzel Day.