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Gluten Scanner & Allergen Detector

Scan any barcode and know in seconds if a food is safe — gluten, 60+ allergens and dietary restrictions, all checked instantly on your iPhone.

Download on the App Store See how it works

New on the App Store Free · No account Research-backed

Built for peace of mind — for life-threatening allergies, always confirm with the manufacturer.

Barcode scan result in GlutenScanning: a Contains Gluten verdict at 95% confidence, with a Contains Allergens list of gluten, milk and soybeans

The app

A guided tour, screen by screen

Every feature, shown on a real device. Scroll through the app's story below.

Three ways to check

Scan a barcode, snap a meal, or pick from your library

Open the app and you're one tap from an answer. Scan a product barcode, let AI analyze a photo of your plate, or choose an item you've checked before.

Instant barcode scanning powered by OpenFoodFacts
Generous daily quotas, no account required

Scan home screen offering Scan Barcode, Analyze Meal with AI and Choose from Library, with daily scan and analysis quotas

Barcode scan result: a Contains Gluten verdict at 95% confidence, with a Contains Allergens list of gluten, milk and soybeans

Instant verdict

A clear answer with a confidence score

No squinting at fine print. Every scan returns a plain-language verdict — like "Contains Gluten" at 95% confidence — and the full list of allergens it found.

Gluten status plus every detected allergen
Confidence score so you know how sure it is

60+ allergens

An encyclopedia of allergens in your pocket

Browse every allergen the app tracks, each tagged with a risk level and its common aliases — so you recognize the hidden names on a label, not just the obvious ones.

HIGH / MEDIUM / LOW risk levels at a glance
Aliases & cross-contamination notes for each

Allergen encyclopedia: a scrollable list of allergens such as Almonds, Brazil Nuts and Casein, each tagged HIGH, MEDIUM or LOW risk with aliases

Dashboard showing today's allergen load rated Low, cumulative load and counters for scans, allergens and safe items

Daily dashboard

Track your allergen load over the day

Your home screen keeps a running tally — today's allergen load, how many products you've scanned, and how many came back safe — with quick tips to stay ahead.

Scans, allergens and safe counts at a glance
Cumulative load with practical daily tips

Compare foods

See which foods carry the most allergens

Foods are ranked by an allergen content score, so you can compare at a glance and pick the lower-risk option — then open any item for the full breakdown of its score.

A single numeric score per food, ranked high to low
Tap through for the full score breakdown

Foods ranked by allergen content, each labeled Contains Gluten with a numeric allergen score such as 70 or 60

Go as deep as you need

Every food and every allergen has a detail page — with scores, symptoms and cited medical sources.

Food detail for Peanut Butter Cookies showing an allergen score of 70, a High Risk badge, a Contains Gluten status and an allergen list of peanuts, gluten and wheat — Per-food allergen scores, a risk badge and a transparent breakdown.

Almonds detail page listing common symptoms, related health conditions and dietary restrictions with cited sources including FDA food allergy guidelines and JAMA 2016 — Symptoms and conditions for each allergen, backed by cited sources.

Download on the App Store

What makes GlutenScanning essential

Evidence-based allergen detection for safer food choices

Instant Barcode Scanning

Point your camera at any product barcode and get immediate gluten status plus comprehensive allergen information from OpenFoodFacts database

AI-Powered Meal Analysis

Take a photo of your meal and get AI-powered allergen detection across multiple food items in a single photo

60+ Allergen Encyclopedia

Detailed information on gluten, major allergens, regional allergens, cross-contamination risks, and regulatory thresholds

110+ Scientific Articles

Access curated research from Stanford, Harvard & MIT on celiac disease, gluten sensitivity, and food allergies

Alternative Finder

When a product contains allergens, instantly search for similar allergen-free alternatives in the same category

Privacy First

No account required. Data stays on your device. Optional anonymous analytics. No personal information collected

Backed by peer-reviewed research

Allergen information cited from 110+ peer-reviewed studies, including work from Stanford, Harvard and MIT researchers.

Stanford Medicine

Curated findings on celiac disease, food immunology, and allergen management

Harvard Medical School

Curated findings on non-celiac gluten sensitivity and cross-contamination risks

MIT

Curated findings on rapid allergen detection and food-safety innovations

GlutenScanning is independent and not affiliated with or endorsed by these institutions.

Allergens Covered

Gluten12+ articles

Peanuts12+ articles

Tree Nuts12+ articles

Milk11+ articles

Eggs11+ articles

Fish11+ articles

Shellfish10+ articles

Soy11+ articles

Sesame10+ articles

50+ more allergensand counting

Your health data stays yours

Privacy is built in, not bolted on. GlutenScanning works without an account and keeps your scans on your device.

No account required

Scan history & dietary profile stay on your device

Anonymous analytics, opt out anytime in Settings

Read our privacy policy

Who GlutenScanning helps

Essential for anyone managing dietary restrictions

Celiac Disease

People with celiac disease requiring strict gluten-free diets

Gluten Sensitivity

Those with non-celiac gluten sensitivity or intolerance

Food Allergies

Managing allergies to nuts, dairy, soy, eggs, and more

Parents

Parents managing children's food allergies and restrictions

Health-Conscious

Health-conscious shoppers checking product ingredients

Smart Shoppers

Anyone wanting to make informed food choices

Frequently asked questions

Everything you need to know about the gluten scanner

What is GlutenScanning?

GlutenScanning is a gluten scanner and allergen detector app for iPhone. Scan any food product barcode to instantly check for gluten, 60+ allergens, and dietary restriction violations. It also uses AI to analyze photos of meals.

Is GlutenScanning free?

Yes. GlutenScanning is free to download with core barcode scanning and allergen detection features available at no cost.

Does the gluten scanner work without internet?

Barcode scanning works offline using a local product database. AI meal photo analysis requires an internet connection.

How accurate is the allergen detection?

Detection uses ingredient data from OpenFoodFacts and product labels, cross-referenced against an allergen catalog of 60+ allergens. For life-threatening allergies, always verify with the product manufacturer.

What allergens does GlutenScanning detect?

All 9 major FDA-recognized allergens (milk, eggs, fish, shellfish, tree nuts, peanuts, wheat and gluten, soybeans, sesame) plus 50+ additional allergens and intolerances.

Does GlutenScanning collect my health data?

No. GlutenScanning is privacy-first. No account is required and your scan history and dietary profile stay on your device. No personal health information is collected or shared.