An unfamiliar ingredient name can make a phone reference useful in the supermarket. The important question is what supports the information it displays. A coloured warning or a short label should be a starting point for understanding an additive, not a diagnosis or a personal instruction to avoid a food.
A reference category with a long history
The Food Additives 2 listing is a current reference point for the longstanding app subject. It describes ways to look up additives, but its health-related marketing claims are the developer’s statements. An App Store description does not independently validate those claims or establish that the August 2008 article covered the same current edition.
What an E number tells you
EFSA’s overview explains that additives serve purposes such as preserving freshness or changing texture and appearance. It describes evaluation of additives and the labelling of their identity and function. The number is an identifier; it does not, by itself, tell you whether a particular person will react to a particular product.
Check the reasoning, not just the rating
Look for the source and date behind an entry. Does it explain the amount and context considered, distinguish a regulatory decision from a research finding and say which jurisdiction it covers? A database that cannot show how a category was assigned gives you little basis for interpreting its conclusion.
For an allergy or another personal medical concern, use the actual package information and seek advice from an appropriate healthcare professional. An app cannot inspect the product in your hand or evaluate your medical history.
The useful role of an ingredient app is to help you identify a term and locate reliable information. This guide makes no safety ranking of individual additives and offers no treatment or dietary prescription.