Cookie Policy
Last updated: October 5, 2026
We only use cookies and browser storage that the site needs to work. No advertising or cross-site tracking cookies, so no consent is needed.
Essential cookies
lt_session — keeps you signed in (30 days, httpOnly, digitally signed).
lt_lang — remembers your language (1 year).
lt_oauth — used only while you sign in with Google, to protect that sign-in from forgery (up to 10 minutes, then deleted).
Cloudflare may set essential security cookies (such as __cf_bm) to tell real visitors from bots.
Browser storage (localStorage)
Lesson progress for visitors who aren't signed in, practice stats, and whether you dismissed the cookie notice. It stays on your device and you can clear it in your browser settings.
Third parties
Stripe's checkout page, Google's sign-in page and Cloudflare Turnstile (our bot check) may use their own cookies or device signals for security and fraud prevention, under their own policies.
Cloudflare Web Analytics, which we use to count visits, uses no cookies.
Managing cookies
You can block cookies in your browser settings, but you won't be able to sign in without the essential ones.