Sheetz says it plans to offer free coffee to celebrate National Coffee Day this Friday.

To qualify for the offer, just order any other item through the free Sheetz app using the code BREW4U in the "Offerz" tab.

The promotion includes a free add-on such as caramel cold foam, and applies to any of their Nitro and Cold Brew coffee blends.

The offer begins on Friday and lasts until Sunday, October 1st. Limit of one redemption per customer.