Here's an example of how a menu looks customized to your food allergy needs.
Have food allergies and can't figure out what you can and can't eat at every restaurant?
Presenting Allergy Caddy - The Food Allergy iPhone app for anyone with food allergies or those who care for children with food allergies. Allergy Caddy is a mobile iPhone/iPod Touch app for translating restaurant's allergen guides to your specific needs on the fly. Allergy Caddy is for those with food allergies to the top 10 Allergens/Sensitivities: Peanut, Milk, Egg, Wheat, Soy, Gluten, Fish, Shellfish, Tree Nuts, and MSG and has data for 40 restaurants from Arby's to Zaxby's.
Requirements: Compatible with iPhone, iPad, and iPod touch. Tested on iPhone and iPad IOS 5.1 and higher. WiFi or 3G network connection NOT required.