Privacy Policy
Last Updated: December 15, 2025
1. Information We Collect
1.1 User-Provided Information
- Email address
- Display name
- Profile information (native language, Japanese level, goals, bio, etc.)
- Profile picture (optional)
- Gender (optional, private by default)
1.2 Automatically Collected Information
- Timezone
- Last active time
- Chat history
- Call history
- Mentor score
2. How We Use Information
We use collected information for the following purposes:
- Service provision and operation
- User matching
- Preventing abuse
- Service improvement and analysis
- Customer support
3. Information Sharing
3.1 Public Information
The following information is visible to other users:
- Display name
- Profile picture
- Native language, Japanese level, goals
- Bio
- Mentor status
- Last active time (relative display)
3.2 Private Information
The following information is not public:
- Email address
- Mentor score (numeric value)
- Gender (private by default, can be made public by user)
- Report history
4. Data Storage
Data is stored in Supabase (PostgreSQL). Supabase data centers are certified with ISO 27001 and SOC 2 Type II.
5. Data Deletion
You can request account deletion to remove your personal data. However, the following data may be retained in anonymized form:
- Statistical data
- Abuse records
6. Cookies
This service uses cookies for authentication. Disabling cookies will prevent you from using the service.
7. Third-Party Services
This service uses the following third-party services:
- Supabase (authentication, database, storage)
- Google STUN Server (WebRTC calls)
8. Under 18 Prohibited
This service does not intentionally collect personal information from individuals under 18. If use by someone under 18 is discovered, their account will be deleted.
9. Changes to Policy
This policy may be changed without notice. For significant changes, we will notify users within the service.
10. Contact
For privacy-related questions, please contact us at [contact information].