Privacy Policy

We keep the information needed to operate accounts, study progress, payments, and site security.

Information we collect

We may store your email address, password hash, login/session data, study answers, wrong-answer notes, bookmarks, payment status, referral email, and support messages you send to us.

How we use it

We use this data to provide the quiz service, save progress, manage Premium access, improve reliability, respond to support requests, and prevent abuse.

Third-party services

The site may use hosting, database, email, payment, analytics, and advertising providers such as Railway, payment providers, and Google AdSense where configured.

Operator

Business name: The Songdo | Business registration no.: 877-04-02518

Contact

For privacy questions, contact songodinfo1@gmail.com.