Privacy Policy
How this app handles personal information and data.
Information we collect
This app may collect the following: ・Language preference (Cookie: NEXT_LOCALE) ・Access logs (Vercel server logs: IP address, time of access, user agent) ・Page views (Vercel Analytics: page views, referrers, campaign/UTM parameters) ・When playing YouTube videos, connection data is sent to YouTube
Purpose of use
Collected data is used only to keep your language preference, improve and maintain the service, and prevent unauthorized access. For analytics we only use Vercel Analytics; we do not use third-party analytics tools such as Google Analytics.
Third parties & external transfers
This app does not share personal information with third parties. However, communication occurs with the following external services: ・Vercel (hosting) ・YouTube (embedded video playback) ・Google Search Console (to understand site search performance for operations)
Data management
Collected data is stored on servers managed by the hosting provider. We will honor deletion requests within reasonable limits.
Changes & contact
This policy may be updated from time to time and will be published on this page. The updated version takes effect on its publication date. For inquiries, see "Contact & operator" on the About page.