My first thought is that an app is probably overkill. There are already several websites with this info. If you're going to have your own website, two things would help. First, add an autocomplete function so I can start typing "rasp" and get raspberries. Second, surface all the information about a food once it's found -- not just "ok -- see below."

Nice work. Something very simple like a static page with builtin search can be relevant.

Nitpick: it doesn't recognise "meat".