Privacy Policy

1. Data We Collect

When you sign up via Email or Facebook, we collect your email address and public profile name. This is used solely to identify your account and save your flashcard progress.

2. How We Use Data

Your data is used to:

• Sync your Japanese vocabulary across devices.
• Track your study streaks and card scores.
• Personalize your learning experience using AI.

3. Third-Party Services

We use Supabase for secure data storage and Facebook Login for authentication. We do not sell your data to third parties. We use OpenAI/Anthropic APIs to generate flashcard content, but no personal identifiable information is sent to these services.

4. Data Deletion

You can delete your account and all associated flashcard data at any time by contacting us or using the delete option in your account settings.