We collect your email address for authentication and purchase records. We also log download activities (IP address, timestamp, device and browser information) to prevent fraud and protect our resources. We may use essential cookies to maintain login status and, with your consent, use analytics cookies to improve the experience.

Your data is used for service fulfillment, account management, order and refund processing, security protection, and product improvement. We do not sell your personal information to third parties. To achieve these purposes, we may share data with payment, login, and analytics providers to the minimum necessary extent.

We use Stripe for payment processing and better-auth for secure authentication. These services have their own privacy policies. We retain data only for the period necessary to achieve the service purposes, after which it will be deleted or anonymized. You may request access, correction, or deletion of your personal information via yinglinhan1987@gmail.com. Users under 18 should use our services with guardian consent.