Privacy Policy

Dizi — Chinese Flute Studio stores the minimum account data needed to run the app: Sign in with Apple identifier, optional display name and email from Apple, age confirmation, lesson progress, and subscription status.

Recordings

Practice recordings stay on-device and private. They are not uploaded to this backend for coaching, analytics, advertising, or model training.

Purchases And Coaching

Apple StoreKit transaction data is verified to unlock Dizi Pro. Pro coaching sends recent pitch statistics and problem-note labels to Cloudflare Workers AI; it does not send raw recordings.

Deletion

Account deletion hard-deletes the account and progress rows. Subscription records are retained only as anonymized transaction tombstones with no account link so purchase history can remain auditable.

We do not sell personal data and we do not show ads.

Email: mitsi@uptrail.ai
Phone: +61 404 002 228