1. Information We Collect
We collect information to provide and improve our Japanese learning service:
Account Information
- Google account details (name, email, profile picture) via OAuth
- User preferences and display settings
- Learning level and language preferences
Learning Data
- Conversations with AI companions
- Vocabulary study progress and review history
- Grammar exercise results and tokenization requests
- Daily quest completion and achievement data
- Spaced repetition learning intervals and mastery levels
- Search queries and dictionary lookups
AI Companion Data
- Custom companion personalities and backstories you create
- Companion affinity levels and relationship data
- Question threads and follow-up conversations
2. How We Use Your Information
We use your information to:
- Provide personalized Japanese learning experiences
- Generate AI companion responses tailored to your conversations
- Track your learning progress and adapt difficulty levels
- Implement spaced repetition algorithms for vocabulary review
- Provide grammar analysis and language insights
- Create daily quests and learning recommendations
- Analyze usage patterns to enhance the service
3. AI and Machine Learning
Our service relies heavily on AI technologies:
- We use Google's Gemini AI services for conversation generation, subject to their privacy policy
- Your conversations and data are not used to train or improve third-party AI models
4. Data Sharing and Disclosure
We do not sell your personal information. We may share data in limited circumstances:
- With third-party service providers who help operate our platform
- When required by law or to protect our rights and users' safety
- In connection with a business transfer or acquisition
5. Data Retention
We retain your data as follows:
- Learning progress and vocabulary data: Until you delete your account
- Conversations with AI companions: Until you delete them or your account
- Usage analytics: Aggregated data may be retained indefinitely
- Account information: Until account deletion plus legal retention requirements
6. Children's Privacy
Our service is intended for users 13 years and older. We do not knowingly collect personal information from children under 13. If we discover we have collected data from a child under 13, we will delete it promptly.
7. International Data Transfers
Your data may be processed and stored in countries other than your own. We ensure appropriate safeguards are in place for international transfers and comply with applicable data protection laws.
8. Changes to This Policy
We may update this Privacy Policy periodically. We will notify you of significant changes through the service or via email. Your continued use constitutes acceptance of the updated policy.
9. Contact Us
If you have questions about this Privacy Policy or want to exercise your rights, please contact us:
- Through the application's support features
- Via our official support channels
- For data protection inquiries, please specify "Privacy Request" in your message