Privacy Policy

Last updated: July 2026

What we store

Your lesson progress, stars, XP, streaks and settings are stored locally in your browser (localStorage). They never leave your device. Clearing your browser data erases them.

Payments

Purchases are handled entirely by our payment provider (the merchant of record). We never see or store your card details. When you activate a license key, the key is checked against the provider's license API and stored locally on your device.

Analytics

If analytics are enabled, we collect anonymous usage events (e.g. "lesson completed") with no personal identifiers, cookies, or cross-site tracking.

MIDI & audio

MIDI input and audio are processed entirely in your browser. Nothing you play is recorded or transmitted.

Contact

Privacy questions: deja60@gmail.com.

⚠️ Template only — review before launch and keep it accurate as the app evolves (especially if you add accounts or analytics).