Although it says to 'reach first' for superfree foods, it doesn't rule out having free foods as snacks.
In the magazine and on the website menus, free foods are given as snacks aswell.
Fruit makes me hungrier so I am much more likely to have a yogurt or hard boiled egg or piece of ham as a snack.
Just editing to say that I personally wouldn't consider a mugshot or pkt of pasta n sauce as a snack because they are too processed. I never eat them anyway though.