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About What2Know

What2Know reads the label so you don't have to. Scan any product and get a clear, plain-English read on what's inside, for everyone in your home.

NO BARCODE? NO PROBLEM.
Scan a barcode for an instant, unlimited, always-free lookup. No barcode, like wine, local, specialty or cosmetics? Tap "Scan the label" and What2Know reads the packaging straight from a photo.

SCAN ANYTHING
Food, supplements, cosmetics, pet products, and wine. One app for the whole shelf.

BUILT FOR YOUR HOUSEHOLD
Set up a profile for each person and pet with their allergies, diet, and ingredients to avoid. Every scan tells you who it suits, and who should skip it. Save products to your Family Shelf.

INGREDIENT & HAZARD SCREENING
We check the ingredient list against published watch lists from public health authorities and flag additives and ingredients of concern.

BETTER CHOICES
When something doesn't fit, see cleaner alternatives in the same category, right in the app.

What2Know is an informational tool, not a medical device. It does not diagnose, treat, or prevent any condition. Allergen and hazard results reflect detection in the text we were able to read, not a guarantee of safety. Always read the physical product label and consult a qualified professional for medical or dietary decisions.

FREE VS. PREMIUM
Barcode scanning is free and unlimited, with no account needed. Premium unlocks unlimited AI "Scan the label" photo reads, meal scans, unlimited household profiles, and product alerts.

What2Know Premium is an auto-renewing subscription at $4.99/month or $19.99/year. Payment is charged to your Google Play account at purchase, and your subscription renews automatically unless you cancel at least 24 hours before the end of the period. You can manage or cancel anytime in your Google Play subscriptions.

Privacy Policy: https://what2know.app/privacy
Terms of Use: https://what2know.app/terms

CHASM AI Inc.

What’s new

Version 2.3.2 · Updated October 10, 2026

Safety update. Medicines, vitamins and supplements, and household or cleaning products are no longer scored as foods. A medicine or cleaning product now reads "Not a food. Not assessed." with the package directions; a supplement is flagged for children under 4 and marked "check the label" for everyone else. If you scanned one of these before, open it again to see the corrected result. Also: a first look at Instacart on your Family Shelf (coming soon), and small fixes throughout.

User reviews

Linda
Linda
Absolutely fantastic! The new upgrade made it much clearer. I don't go to the grocery store without! Dining in restaurants with the scanner makes it able to read the nutritional value on my meals! AMAZING!!!!
A. Fel
A. Fel
everything! all in 1 app! brilliant!

Alternatives to What2Know

Looking for apps like What2Know? Here are 6 similar Android apps on Google Play. The highest rated is Clove: Import & Save Recipes (4.8/5), and all 6 are free to download.

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