This English version is provided for reference. If there is any inconsistency, the Japanese version prevails.
View the Japanese versionTsukutta (the “Service”) is operated by an individual. This Privacy Policy describes how the Service handles users’ personal information under Japan’s Act on the Protection of Personal Information.
1. Information We Collect
We collect the following information to provide and improve the Service.
Account information
- Email address (when registering or signing in)
- Display name and profile information provided voluntarily
- Profile image (optional)
- Public Google Account profile information when Google authentication is used
Usage data
- IP address (access logs and fraud prevention)
- Browsing history and search terms
- Usage such as app upload and download history
- Browser information, device information, and access date and time
- Cookie information
2. Purposes of Use
We use collected information for the following purposes.
- Providing, operating, and maintaining the Service
- User authentication and account management
- Access analysis and service improvement
- Detecting and preventing misuse
- Improving security
- Responding to user inquiries
- Providing important notices about the Service
3. Disclosure to Third Parties
The operator does not provide users’ personal information to third parties except in the following cases.
- With the user’s consent
- When required by law
- When necessary to protect a person’s life, body, or property and obtaining consent is difficult
4. External Services
The Service uses the following external services. Please refer to each provider’s privacy policy for its handling of data.
- Supabase - user authentication, database, and file storage
- Vercel - hosting and access analytics (Vercel Analytics)
- Sentry - error monitoring and performance analysis
5. Cookies
The Service uses cookies for the following purposes.
- Session management (maintaining signed-in state)
- Access analysis (understanding usage and improving the Service)
You may disable cookies in your browser settings, but some Service features may then not function correctly.
6. Security Measures
The operator implements the following safeguards to prevent leakage, loss, or damage of personal information.
- Encrypted communications (SSL/TLS)
- Database access controls (Row Level Security)
- Password hashing
- Periodic security reviews
7. Access, Correction, and Deletion
Users may request the following regarding their personal information.
- Access - after verifying identity, we disclose personal information held
- Correction - profile information can be edited directly from My Page
- Deletion - accounts can be deleted in My Page account settings; related personal information is deleted with the account
- Suspension of use - users have the right to request suspension of use
If you cannot complete these actions, please contact us through the contact page.
8. Contact
For inquiries about our handling of personal information, please contact us through the contact page.
9. Changes to This Policy
The operator may revise this Privacy Policy as necessary. Revisions will be announced by posting them on the Service. Material changes will be announced separately on the Service. The revised Privacy Policy takes effect when posted.