I purchased the app and the allergen in-app expansion and now I can see what foods might be causing my issues. I LOVE the option to change the food color coding yourself. For instance most beans are a yellow food for me but I know I feel awful when I eat them so I changed them all to red. This will really help me when shopping at the grocery store, especially when looking at food additives. I can never remember which ones to avoid on my own. Great tool to help me develop a customized eating plan based on my particular allergies/intolerances. Love it!