Safety guidance

Allergen Signal is a label-reading aid. It is not a medical device, laboratory test, diagnosis, treatment or guarantee that food is safe to eat.

Always check the physical package

Recipes, suppliers, factories and labels can change. Match the exact product and flavour, then read the complete ingredients list, the Contains statement and any May contain wording every time.

What a result means

• Profile allergen declared means available text appears to name a selected allergen.
• Cross-contact warning means available text appears to include precautionary wording for a selected allergen.
• No profile allergen declared only means none was found in the available text. It cannot prove absence or safety.
• Unable to confirm means the information is missing, incomplete or unclear.

Limits of photos and databases

AI can miss, misread or invent text. Open Food Facts is community-maintained and can be incomplete or outdated. Neither source can test for undeclared allergens, manufacturing cross-contact, restaurant preparation or contamination after opening.

Australian labelling

The app looks for the plain-English allergen names used by Australian labels, including individual tree nuts. Precautionary May contain statements are voluntary, so their absence does not prove there is no cross-contact risk.

Get appropriate advice

Follow the allergy plan provided by your doctor or accredited practising dietitian. If a label is unclear or conflicts with the app, do not rely on the app; contact the manufacturer or choose another product.

Emergency

If someone may be having a severe allergic reaction, follow their emergency plan, use prescribed adrenaline if directed, and call emergency services immediately. In Australia call 000.