Tomorrow is National Coffee Day (Saturday, September 29th). The good news is that you can enjoy a free cup of coffee at Wawa, but there's a catch.

I saw on CBS Philly you have to use the Wawa app to get a coupon for it.

So, you can't just walk in tomorrow and get your free cup of joe, you have to download the coupon first.

I guess this works, right? Because this is a great reason to download their app right now.

Enjoy!