I usually tip on carryout and I like to think I am generous, but if an app or a carryout option has a tip already preselected I do not tip at all. When I went to order smoothies off of their app to pick up I noticed the tip spot moved to the top and was automatically on 15% and since I always order the same thing I almost missed it, which makes me wonder how many other people have tipped without intending. Don't be sneaky because I can get my goods elsewhere.