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🌰 Nut allergy scanner app

Scan any food barcode and know in seconds whether it contains tree nuts — under any of its 28+ label names. Free and independent: no ads, no sponsored products, an honest “Unknown” when the data is thin.

How it works

1 · Set your profile once — pick tree nuts (and any other allergens) with optional severity per person in your household.

2 · Scan the barcode — Scallergy checks the ingredient list against every tree nuts label name: almond, almonds, cashew, cashews, walnut, and more.

3 · Read one clear verdict — Avoid (it's in the ingredients), Caution (may-contain warning), Unknown (we say so instead of guessing).

Scallergy showing an Avoid verdict: mayonnaise contains eggs, highlighted in the ingredient list Scallergy showing a Looks OK verdict for a scanned peanut butter product Scallergy allergen profile: per-allergen selection with severity levels

Get the nut allergy scanner

Android beta — free, takes under two minutes to set up.

Get Scallergy on Google Play

In closed beta? Join here first. iPhone version coming soon.

What it checks for

The exact label names the scanner matches for tree nuts — see the full Tree Nuts allergy guide for where each hides:

almond almonds cashew cashews walnut walnuts hazelnut hazelnuts pistachio pistachios pecan pecans macadamia brazil nut brazil nuts pine nut pine nuts chestnut chestnuts nut butter almond butter almond milk praline marzipan nougat gianduja nut oil nut paste

Frequently asked questions

How does the nut allergy scanner work?

Point your camera at any food barcode. Scallergy looks the product up (USDA FoodData Central, Open Food Facts, and community submissions), checks the ingredient list against 28+ tree nuts label names, and shows one clear verdict: Avoid, Caution, Looks OK — or an honest Unknown when data is thin.

Is the app free?

Yes — Scallergy is free, independent, and has no ads. No brand can pay to look safer.

Can it guarantee a product is safe?

No app can. Scallergy is assistive: it shows its data source on every product, says Unknown honestly, and you should always check the printed label and follow your allergist's advice.

Scallergy is assistive, not medical advice — always check the printed label and consult an allergist. Data sources.

Allergen Guides

📖 Allergen Information Guide 🧪 Additives & Allergens Directory 📊 Product Lists from Ingredient Data 📲 Join the Android Beta Milk Allergy Guide Eggs Allergy Guide Fish Allergy Guide Crustacean Shellfish Allergy Guide Tree Nuts Allergy Guide Peanuts Allergy Guide Wheat Allergy Guide Soybeans Allergy Guide Sesame Allergy Guide Gluten (cereals) Allergy Guide Celery Allergy Guide Mustard Allergy Guide Sulphites Allergy Guide Lupin Allergy Guide Molluscs Allergy Guide

Scanner Apps

Milk allergy scanner Eggs allergy scanner Fish allergy scanner Shellfish allergy scanner Nut allergy scanner Peanuts allergy scanner Wheat allergy scanner Soybeans allergy scanner Sesame allergy scanner Gluten-free scanner Celery allergy scanner Mustard allergy scanner Sulphite scanner Lupin allergy scanner Molluscs allergy scanner