Privacy policy

Last updated: November 10, 2026

What we collect

Your email address and, if you use Google sign-in, your name. If you verify a school email for the student price, that address. Your practice data: answers, notes, bookmarks, session history and drill results. Billing status from Stripe (we never see or store card numbers). Basic request logs for security and rate limiting.

How we use it

To run your account, show your progress, schedule reviews, compute anonymous aggregate statistics such as question solve rates, prevent abuse, and send sign-in links and essential account emails.

Processors

Cloudflare (hosting and database), Stripe (payments), Resend (sign-in email), Google (optional sign-in) and, if you use the AI interviewer, Anthropic (your interview messages are sent to generate replies). Each processes data on our behalf under its own terms.

Your choices

Export your data from Progress at any time. Delete your account from the Account page. That removes your practice data and account. Billing records kept by Stripe follow Stripe's retention rules.

Cookies

One essential cookie keeps you signed in. We use no advertising cookies.

Contact

quantgym.team@gmail.com