I built HasGluten [1, 2] with react + google spreadsheet, hosted on github for free, you get a cheap, scalable, geo-distributed software stack, with simple interfaces to maintain both code (GitHub Pages) and data (Google Sheets — also great for the non-tech).
example, https://spreadsheets.google.com/feeds/list/1btWWclsRW6-wrIdC...
[1] https://github.com/hasgluten/hasgluten/blob/master/src/app/p...
You probably should try to do international free wiki-like open database of all foods with EAN codes. Maybe Fitbit and other vendors could chip in to provide food details.
I would love to scan all my food EAN codes and see in the computer what I have in my refrigator in calories, protein etc.
P.S. Google spreadsheet is not enough for database of all the world's food
Jokes aside, we maintain the list mostly for ingredients. Many people, especially "novice", often ask the same questions -- or you may have doubts for strange/unfamiliar foods, for instance if you're traveling in a foreign country.