Privacy Policy

Last updated: March 2026

What We Collect

• Account info: Email address and hashed password (we never store your password in plain text).
• Usage data: Which tools you use, quota consumption, and lesson progress. This is stored locally in our database and is not shared with third parties.
• Payment info: Processed entirely by Stripe. We do not store credit card numbers, CVVs, or bank details on our servers.
• Referral data: If you use the affiliate program, we track referral codes, sign-up attributions, and commission records.

What We Don't Collect

• We do not use third-party analytics trackers (no Google Analytics, no Facebook Pixel).
• We do not sell, rent, or share your personal data with advertisers or data brokers.
• We do not track you across other websites.

AI Content Processing

When you use Premium AI features, your input is sent to Anthropic's Claude API for processing. This data is subject to Anthropic's privacy policy. We do not store the full AI responses beyond your active session. Grading scores (deterministic, no AI) are stored for your progress tracking.

Cookies

We use a single session cookie to keep you logged in. No tracking cookies, no third-party cookies, no cookie banners needed.

Data Storage

Your data is stored in an encrypted SQLite database on our server. Backups are created before system updates. We do not use cloud databases or distributed storage for user data.

Your Rights

• Access: You can view your account data from your dashboard and settings.
• Correction: You can update your email and password from account settings.
• Deletion: Contact us to request full account deletion. We will remove your data within 30 days.
• Export: Contact us to request a copy of your data.

Changes

We may update this policy. Material changes will be communicated via email. Continued use after changes constitutes acceptance.

Contact

Privacy questions? Contact us at the email address listed on the site.