AllerLens: Allergy Scanner

Build a personal watchlist with Big 9 and custom chips, then scan ingredient labels for matching words—right on your device.

AllerLens helps you review ingredient labels faster when shopping, cooking, or checking snacks for your family.

Set your allergy watchlist once, then scan a label with the camera, choose a photo, or paste ingredients. AllerLens highlights matching ingredients directly in the label text, separates red ingredient warnings from yellow advisory language, and keeps your recent checks on your device.

Features:

• Big 9 allergen watchlist: milk, egg, fish, shellfish, tree nuts, peanuts, wheat, soy, and sesame.
• Custom watch words for personal or family-specific allergies.
• Camera and photo label scanning with on-device text recognition.
• Red warnings for matched ingredients.
• Yellow caution for advisory language such as may contain or shared equipment notes.
• Blue highlights for negated claims such as peanut-free.
• Local scan history and scan missions.
• No account required.

AllerLens is a label-review helper, not a medical guarantee. OCR and ingredient rules can miss or misread text. AllerLens does not guarantee accuracy or food safety and does not claim a food is safe. Always read the full package label yourself and follow advice from your clinician or allergist.