App Suggestion to help figure out what foods are causing complications

Both my child and myself are visiting Mayo Clinic soon as we have separate issues and I believe a genetic condition is the root cause. It has been a real mystery so far. Affected are our liver, pancreas, gallbladder. We are seeing a wonderful RD at home who said there are apps to try to help you figure out foods that give you troubles. Nailing this down has been extremely difficult and she said AI can almost do it better than we can through elimination diet. Do you have any recommendations? Some names she threw out are Reflux Tracker. Tummy Tracker. I'm just beginning to research but this group may be more helpful.