Privacy Policy

    Privacy Policy

    Last updated: October 2026

    Data We Collect

    • •Account information: your email address and sign-in method when you create an account.
    • •Learning progress: lessons completed, XP, badges and certificates, stored so your progress syncs across devices.
    • •Subscription status: whether your plan is free or premium, and its renewal date.
    • •Contact messages: anything you send us through the Contact Us form.

    Cookies & Local Storage

    • •We use browser storage to keep you signed in and remember your language, theme and text-size preferences.
    • •Guest progress is stored locally on your device until you create an account.
    • •We do not use advertising or cross-site tracking cookies.

    Payments

    • •Payments are processed securely by Stripe. We never see or store your full card number.
    • •Stripe receives only the details needed to process your payment, under its own privacy policy.
    • •We store only your subscription status and renewal dates — never raw payment credentials.

    Third-Party Services

    • •Google — optional sign-in provider; we receive your name and email only.
    • •Stripe — payment processing for premium subscriptions.
    • •Each third party processes data under its own privacy policy; we share only the minimum required.

    Your Rights

    • •You can reset your learning progress at any time from your profile page.
    • •You can request a copy or deletion of your account data by emailing us.
    • •Deleting your account removes your progress, certificates and subscription record.

    Contact

    Questions about this policy or your data? Email us at qs.financialdatascience@gmail.com