Yesterday I downloaded a new app it's called the Venio. This app is great it allows you to choose your choice diet such as gluten free, paleo etc and also does your grocery list for the week for the food that it wants you to make. It's simple to use and best off all it's free from your app store! http://ven.io/iphone_app/4a53620
It also gives you the option to personalize it with the picture your weight and your age so it's very specific to your exact needs. It also keeps track of your progress so that you can see what is and what isn't working for you.