An app can't solve everything. But it can definitely help.
Diagnosed with Crohn's (a stomach illness) in 7th grade - I faced a lot of challenges, including giving up dairy, wheat, soy and much more.
worry-free is an app that allows you to discover snacks on the go or near your residence based on your dietary restrictions. Simply enter your restrictions and worry-free will filter through its "snackbase" and reveal to you snacks in the area that are within your diet.
See project: http://www.adamdesigns.me/#/worryfree/