Privacy
Last updated November 2026.
Lingosu is a browser extension and website that help you learn a language while you browse. This page explains what we store, what we send and the choices you have.
Stored in your browser
Your settings, saved words, progress, streaks and game scores are stored in your browser. Which words appeared on which pages never leaves your browser.
If you create an account
Accounts are run by Clerk. We store your email, name and photo if you add them, the sign-in methods you use, your languages, level and daily goal, your course progress and saved words so they can follow you to other computers, and a random identifier for each browser that uses Premium.
Sent to other services
Translations. To show a word in your new language, Lingosu sends that word or sentence and the language pair to translation and dictionary services. Voices. A word you ask to hear may be sent to a text-to-speech service. Payments. Freemius handles payments; we never see your card details.
What we don’t do
We don’t sell your data and we don’t show ads. Lingosu reads the text of a page only to show words on the page you are looking at.
Deleting your data
Delete your account from your account page and everything linked to it is removed, or write to us and we will do it for you.
Contact
Questions about privacy: write to us.