A typical AI answer (illustrative)
Good news! This bar is vegan and safe for most people. Enjoy!
- Problem: No source
- Problem: Claims it can't know
- Problem: Ignores your allergy
Read the fine print, made for you.
Point at a label. We'll explain what it means for you.
- Snap a label
- Checks your allergies & meds
- Shows the proof
Or try one of ours
Label Lens reads food labels, medicine boxes and cleaning products, in English or Spanish, and checks them against your allergies, your medications and your diet.
How it works
No sign-up. Just point your camera.
Tell it about you
Allergies, medications, diet and language. It stays on your phone.
Snap any label
Food, medicine or household products.
Instant first read
The product name appears first, while the full check is still running.
Warnings made for you
Color stickers for your allergies and medicines.
Tap for proof
Every sticker shows the exact words from the label.
Listen or ask
Hear it read aloud, or ask a follow-up question.
Proof, not guesses
The same peanut snack bar, for someone with a peanut allergy.
Label Lens
Contains peanuts
“CONTAINS: PEANUTS, SOY.”
Matches your allergy: peanut
- Good: Quotes the label
- Good: Matched to your allergy
- Good: Severity fits the risk
- Every warning quotes the label.
- It never says “vegan” or “allergen-free” unless the label does.
- Medicine questions always point you to a pharmacist.
Free. Private. Open source.
No account to make. Your profile lives on this device and is only sent along with a photo, to check that label.
Read the code on GitHubBy the numbers
- warning quotes in our saved examples found word for word on the label
- 44 of 44
- Claude models read every photo at the same time: one for the first read, one for the full check
- 2
- automated tests, from the answer format to the full scan in a browser
- 68
Questions, answered.
Is this medical advice?
No. Label Lens explains what a label says in plain language. For anything about medicines, especially mixing them, it tells you to confirm with a pharmacist. If something sounds like an emergency, call your local emergency number or poison control.
Where does my profile go?
Nowhere. Your allergies, medications, diet and language are saved in this browser on your device. There is no account and no database. They are sent along with a photo only so that label can be checked for you.
What kinds of labels work?
Food packaging, medicine boxes and household products like cleaners. Get the ingredients or warnings in frame and as flat as you can.
What if my photo is blurry?
It says so and asks you to take it again, instead of guessing at words it can't read.
How does it avoid making things up?
Every warning has to quote the exact words it came from on the label. The app checks each answer in code before showing it: a warning without a quote is dropped, and an answer that doesn't match the expected format is rejected.
Which languages are supported?
Explanations come in English or Spanish. Pick yours in your profile.
Does it cost anything?
No. It's free, with no account and no ads.
Your next label, explained in seconds.