Doesnt work

I downloaded the app and was a bit skeptical from the reviews. I decided to give it a try anyways. I checked it out when I downloaded it and it seemed to be working fine until the next day when I went to McDonalds. I opened the app to get the $1 off the Big Mac and it completely crashed! I was so disappointed that it would stop working as soon as I got to mcdonalds. This is a terrible app and still needs a lot of work.

Jenmichrey about McDonald's, v5.5.1