What2Know

What2Know

Ingredient & allergen scanner

4 ratings
4 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • July 9, 2026
  • September 1, 2026

Features

What2Know screenshot #1 for iPhone
What2Know screenshot #2 for iPhone
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About

Scan product labels to understand ingredients and potential allergens. Set up profiles for household members with specific dietary needs and receive alerts for concerning items. Discover cleaner alternatives for your purchases.

Barcode scanning
AI-powered label scanning
Household profiles with allergies
Ingredient and hazard screening
Product alerts
Alternative product suggestions
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What's New in What2Know

2.2.1

September 1, 2026

Fixes a crash in the shelf price scanner on iPhones running iOS 15.5 to 16.3. If price scanning stopped working for you on an older iPhone, this release restores it. No other changes.

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Subscription plans

What2Know Premium Monthly

Unlimited AI scans and the full household toolkit

$4.991 Month
How to cancel What2Know subscription ⁉️

User reviews

Shrimp Scampi

So I went to a local grocery store and was going to purchase frozen shrimp scampi. So, I scanned the package with what
2know and I learned that there were 39 ingredients mixed in with the shrimp. I immediately placed the package back in the frozen section. Later that day. I went to a large box store and bought fresh shrimp that had no additives. So glad this tool is now available so that I can make better choices.
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Was Wishing for This Just a Few Days Ago

My dog is allergic to some ingredients, and I was searching for another dog food that avoided those, in the grocery store. It was a hassle to pull down the bags and find the ingredients.
Next time, I will use the What2Know app!

How did I survive without this?

This app is so helpful for knowing what food and consumable products are safe for my family and me. It’s easy to use and keeps your history. It lets you put in your family information, as well as your other people (dogs and cats).

Superior to other scan apps

With this app you can scan food, cosmetics, pet foods and more for “What2Know” about every consumable. You can enter your family and pet information so it knows each persons and each pets dietary preferences and restrictions. It’s other scan apps on steroids!

FAQ

What2Know barcode scanning is free, but what does the Premium subscription offer?

What2Know Premium offers unlimited AI "Scan the label" photo reads, unlimited household profiles, and product alerts. It is an auto-renewing subscription priced at $4.99/month or $19.99/year.

How do I cancel my What2Know Premium subscription?

You can manage or cancel your subscription anytime in your App Store account settings. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period.

Does What2Know have ads?

No, What2Know does not contain advertisements. The app is free to use for barcode scanning, with optional premium features available via subscription.

What devices does What2Know support?

What2Know is supported on iPhone and iPod devices. The latest version is 2.0.8, last updated on July 16, 2026.

What is the age rating for What2Know?

What2Know has an age rating of 12+. This indicates the content is generally suitable for users aged 12 and older.

How often is What2Know updated?

The app was last updated on July 16, 2026, indicating regular updates to improve functionality and features. The initial release date was July 9, 2026.

Can What2Know scan wine and cosmetic labels?

Yes, What2Know can scan labels for food, supplements, cosmetics, pet products, and wine using its AI "Scan the label" feature, which is part of the Premium subscription.

What kind of user sentiment does What2Know have?

Based on the provided data, What2Know has a very positive user sentiment, with a rating of 5.0 stars from 3 ratings.