Privacy
Last updated November 2026
The short version
Uno doesn't sell your data, show ads or track you across websites. You don't need an account: without one, your profile and scans stay on your phone. If you sign in (from Settings), they are kept on our server so they follow you to your other devices, and you can delete them any time.
What is stored
- Your account: your name and email. With email sign-in, a scrambled (scrypt-hashed) version of your password: the password itself is never stored. With Google, Google gives us your name, email and profile picture. With Apple, Apple gives us your email (or a private relay address, if you choose to hide yours) and, the first time only, your name.
- Your profile: age, height, weight, sex, goals, allergies, lactose setting, diets, the things you added to your own list, your additive setting, country, light or dark mode and the look you picked for Uno. It is used to work out what is right for you.
- Your scans: the list of products you scanned.
- On your phone: a copy of the above, so the app works offline. Signing out removes it from the device.
- One cookie: an essential, HttpOnly cookie keeps you signed in. No tracking or advertising cookies. The font is part of the app, so no font service sees your visit either.
Who else sees anything
- Open Food Facts: barcodes and search words go to the free Open Food Facts database to find products, with your country if you set one (to show local products first). Nothing else about you is sent.
- AI (only if the server owner turns it on): to reword Uno's one-line reason, your first name, age, weight, goals, lactose setting and the product's nutrition are sent to Google's Gemini API. When you add something to your own list, that word is sent to find its names in other languages.
- Google or Apple: only if you choose "Continue with Google" or "Continue with Apple".
Your controls
In Settings you can change everything, download all your data, sign out, and delete your account and everything in it for good.
Contact
Questions or requests: use "Feedback" at the bottom of your profile.