Konnichiwa Japon
Privacy Policy
This page describes how Konnichiwa Japon handles information in its free web beta.
Account and learning data
If you register, the app sends your email address, password and chosen display name to Supabase Auth to create your account, confirm your email and let you sign in. Passwords are handled by the authentication service; this app does not display them after submission.
When signed in, the app stores your saved Library items, lesson and activity completions, and records used to calculate earned coins in Supabase. Records are associated with your account identifier so the app can restore your Library and progress, show earned coins and prevent duplicate awards.
Guest data and device storage
You can explore as a guest. Guest learning progress, Library selections, coin records and some preferences are kept in your browser's local storage. They may be lost if you clear browser data or change devices. The app offers an explicit import of supported guest progress after sign-in.
The app uses a language preference cookie, Supabase session cookies for signed-in users and a short-lived password-recovery cookie when that flow is used. These support requested app functions.
Services and links
The app uses Supabase for authentication and account-linked storage and Vercel for web hosting. Profile links to YouTube, Instagram and TikTok open third-party services with their own policies.
The optional Vercel Web Analytics component is currently disabled. If it is enabled later, Vercel describes anonymous page-view statistics such as time, page path, referrer, approximate location, browser and device type. The component removes URL query strings and excludes authentication and account pages before sending page views.
Your choices and requests
You can sign out and remove browser-stored guest data through your browser settings. To request access to, correction of, or deletion of your account data, email contact@konnichiwa-japon.com or use the request link in Account. We verify account ownership before acting on a request. Deletion is currently handled by email, not automatically in the app.
The app does not set an automatic expiry date for account-linked records. A fixed retention period and the handling of provider backups have not yet been confirmed.