Overview
Kaidu ("we," "us," or "our") respects your privacy and is committed to protecting your personal information. This Privacy Policy explains how we collect, use, and safeguard your data when you use our Chinese reading application.
Information We Collect
Account Information
When you create an account, we collect:
- Email address
- Display name (optional)
- Profile picture (if you choose to add one)
Usage Data
We automatically collect information about how you use Kaidu:
- Reading progress (chapters completed, current position)
- Stories you've read or generated
- Words you've looked up or saved
- Feature usage and interactions
- Device type and browser information
Generated Content
When you generate stories using our AI features, the prompts you provide and the stories generated are stored to provide the service.
How We Use Your Information
We use your information to:
- Provide the service – Store your reading progress, vocabulary, and preferences
- Personalize your experience – Recommend stories based on your reading history and interests
- Improve Kaidu – Analyze usage patterns to enhance features and fix issues
- Communicate with you – Send important updates about your account or the service
Data Storage and Security
Your data is stored securely using industry-standard encryption on servers provided by Supabase (our database provider) and Vercel (our hosting provider). We implement appropriate technical and organizational measures to protect your personal information.
Third-Party Services
We use the following third-party services:
- Supabase – Database and authentication
- OpenAI – AI content generation
- PostHog – Analytics (anonymized usage data)
- Vercel – Hosting and deployment
These services have their own privacy policies governing their use of data.
Data Retention
We retain your data for as long as your account is active. If you delete your account, we will delete your personal data within 30 days, except where we are required to retain it for legal purposes.
Your Rights
You have the right to:
- Access your personal data
- Correct inaccurate information
- Delete your account and data
- Export your data in a portable format
- Opt out of marketing communications
Cookies
We use essential cookies to maintain your login session and preferences. We also use analytics cookies to understand how the service is used. You can disable cookies in your browser settings, though this may affect functionality.
Children's Privacy
Kaidu is not intended for children under 13. We do not knowingly collect personal information from children under 13. If you believe we have collected such information, please contact us immediately.
Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of significant changes by email or through the app. Your continued use of Kaidu after changes constitutes acceptance of the updated policy.
Contact Us
If you have questions about this Privacy Policy or your data, please contact us at:
Email: kaidu.app@gmail.com