Free sandwich for downloading.?

I frequent McDs because if the $2 Frappe and seen the app advertising free sandwich of choice with app download, however there is nothing showing how to get the free sandwich of my choice or anything. Dont offer me something that is not really being offered, because of this ploy I will actually stop going to McDs and detour to Burger King. Your going to lose loyal clientele BC of this McDs.

sass6285 about McDonald's, v5.4.0