Just read about this new app to help guide people with food intolerances. I haven't looked into it but wanted to share in case it could help someone else. Specifically for those with:

Histamine intolerance and Mastocytosis (histamine content of foods, histamine liberators and DAO inhibitors)

Fructose malabsorption (considers content of fructose and sorbitol, fructose/glucose ratio and problematic fibers, i.e. ructooligosaccharides)

Sorbitol intolerance

Lactose intolerance

Salicylate or aspirin intolerance

Gluten intolerance

Press release on app:
http://prmac.com/release-id-71769.htm

Link to App:
http://www.baliza.de/en/apps/histamine.html