Signing in is optional — every practice feature works without an account. If you sign in with Google, the following information is collected.
Collected information is used only to identify your sign-in and keep your bookmarks.
Account information and bookmarks are kept while you use the service and are destroyed immediately upon your deletion request.
Collected personal information is not provided to third parties. Data is stored on Fly.io cloud servers.
Practice records, settings, etc. are stored only in the browser (localStorage) and are not transmitted to the server.
Users may request to view, modify, or delete their personal information at any time.
Contact: kiske.vibes@gmail.com
This policy is effective from March 24, 2026.