Several years ago I wrote software that would allow people to make note of the foods they eat and keep track of their symptoms, to help them figure out what food caused what problems. This was 8 years ago I think. I don't know if the software works on today's operating systems. But, I have thought in the past about making an iphone or android version. There may already be such an app, but I don't think so. I'm wondering whether or not people would be interested in such a thing. Let me know if it's something you think you would like. Thanks