What2KnowWhat2KnowGet the app

A straight answer for everyone in your home

Scan anything.
Know what matters.

Scan any food, drink, supplement, or pet product. In seconds, What2Know reads what is actually inside and tells you who in your home it is right for and who it is not, flagging allergens, additives, and anything that is not safe for your kids or your pets.

Download on the App StoreSee how it works

Free to download. No account needed.

So simple, the first scan just works

Three taps from the shelf
to a straight answer.

No sign-up, no learning curve. Point, capture, know — here is the whole flow.

What2Know -- Point
1

Point

Aim your camera at any product barcode.

What2Know -- Capture
2

Capture

It locks on in a blink. Tap once.

Hazelnut Spread

Checked for 4 profiles

  • Mayatree nut
  • Jamesall clear
  • Priyadairy
  • Bellanot for pets
3

Know

A plain answer for everyone in your home.

Built for the whole household

Everyone in your home,
checked at once.

One scan, a clear answer for every person and every pet. What2Know flags allergens and additives, and the things a label never spells out -- like a drink that is fine for the grown-ups but not the kids, or an ingredient that is toxic to your dog.

Try it in the app

Lager Pack -- 12 cans

Checked for everyone at home

  • DadNo alerts
  • MomNo alerts
  • Teenalcohol
  • Bella the dogtoxic

All from one scan

More than a score.

People and pets

Every profile gets a clear yes, no, or caution -- the people you love and the dog at their feet.

Age-aware safety

Alcohol flagged for minors and foods toxic to pets are caught automatically -- no rule to set up.

Hazard screen

Ingredients checked against carcinogen and additive watch-lists, in plain language.

Better choices

When something is flagged, cleaner and better-rated alternatives that fit your home.

Family Shelf

Everything you save is re-checked against your household as it changes over time.

Free to start

Barcode scans are always free and unlimited, and you need no account to try it.

Better choices, built in

Flagged something?
Trade up with confidence.

When something is not right for your home, What2Know surfaces cleaner, better-rated alternatives that fit, so you can swap with confidence. Live local prices and weekly-flyer deals are coming next.

Get the app
Your scanHazelnut Cocoa Spread
Cleaner swapSunflower-seed spread

Better-rated for your home · live prices coming soon

Know what matters.

Free to download. Your first scans are on us -- no account needed.

Download on theApp StoreGET IT ONGoogle Play