There’s an important caveat to keep in mind when it comes to food databases, especially those relying on branded or restaurant items:

U.S. law does not require food manufacturers to disclose everything that goes into their products. Under the Code of Federal Regulations (21 CFR § 101.100), there are exemptions to ingredient labeling... An example: flavorings, spices, and incidental additives (like processing aids or anti-caking agents) are not always listed explicitly. Also: proprietary blends and "natural flavors" can legally conceal dozens of chemicals (some synthetic), which consumers have no way of identifying.

Micronutrient data is often estimated or missing from labels and restaurant menus, which limits the accuracy of even the best-intentioned databases. Studies show that the nutritional information provided by restaurants and brands is frequently incomplete or inaccurate, especially when it comes to sodium, sugar, and actual serving sizes. (Urban et al. "The Energy Content of Restaurant Foods Without Stated Calorie Information" ; Labuza et al., 2008 and others)

IMO Food databases are only as accurate as the source data allows. Until food labeling laws mandate full disclosure and third-party verification, apps like this can support health awareness. Still, they shouldn't be treated as precise medical or dietary guidance—particularly for people with allergies, sensitivities, or chronic health conditions that require strict tracking.