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Last updated: April 29, 2026
What BookMind stores today
BookMind stores study progress, theme preference, locale preference, and first-open ceremony state in localStorage on your device. When you sign in, your study progress is also synced to a server-side database (Neon PostgreSQL) so it can be restored across devices.
Analytics
If a GA4 environment variable is enabled in production, BookMind may collect basic usage events such as CTA clicks and learning milestones. When you are signed in, these events may be associated with your account.
Account and cloud sync
BookMind supports optional email-based login using a verification code. Signing in lets you sync your study progress across devices. The pilot does not support file uploads or runtime AI generation.