i bought this app because i wanted to have a portable and reliable list of the kinds of foods i should be careful of. there are so many, and it's nice to be able to check while you're out and about.
i don't hate the app but i'm not thrilled with it either.
it does what it says on the tin - it gives you lists of what not to eat. these lists are organised into categories such as "cheese and dairy" and "vegetables" etc, but there is no search function for looking up specific items, which i think is a pretty big oversight.
it does have information on why particular foods are considered unsafe which i like for two reasons - firstly, it doesn't assume that pregnant women are not interested in learning and understanding new information; and secondly, it allows you to take that information and make your own risk assessment.
all in all, i don't think it was a waste of my money, but i wouldn't say this one's a must-buy.