Privacy Policy

Last updated: June 17, 2026

1. Information We Collect

We collect information you provide directly to us when you create an account or use our practice tools, including:

  • Account information (Username, Nickname, Password)
  • Biometric data for Passkey authentication (handled locally by your device)
  • Content of your practice submissions (writing tasks)

2. How We Use Your Information

We use the collected data to provide and improve our services, specifically:

  • To facilitate AI-powered evaluation of your writing
  • To maintain your practice history and track progress
  • To ensure the security of your account

3. Data Sharing

We do not sell your personal information. Your practice submissions are processed by third-party AI models (e.g., OpenAI/Anthropic) to provide evaluations, but this data is not used to identify you personally by those providers.

4. Data Security

We use industry-standard security measures to protect your data. Your password is encrypted using bcrypt, and we strongly encourage the use of Passkeys for phishing-resistant authentication.

5. Your Rights

You have the right to access, update, or delete your personal information at any time through your account settings. If you delete your account, all associated practice history will be permanently removed.

6. Contact Us

If you have any questions about this Privacy Policy, please contact us through our official support channels.