Very nice site (diarytail.com), by the way.

Unfortunately nutritionix has only basic nutritional data as well, the sort of thing you find on a product label. Not bad but not great. Have a look at their sample data. Plus it's around 10k/year or 50k/license.

I'm thinking home cooks would get a lot of value from the tool, and reasonably good data even if they use raw instead of cooked (as an example).