Privacy and your data

BriskStack Study stores the minimum it needs to track your study progress. All study content is public; signing in only adds personal state.

What we store when you sign in

Identity: your Google account's name and email, held by our auth provider; the app keys your data to an opaque account id.
Study state: which items you have checked, your per-week notes, favorites, the date you last looked at what is new, and your active days for streaks.
Personal additions: resources you add for yourself, private to your account and never folded into shared content.
API tokens: if you mint a coach token, we store only its hash.

What we do not do

No ads, no trackers, no analytics beyond server logs.
No selling or sharing of personal data.
No passwords; sign-in is Google only.

What a visitor can read

Every chapter, resource and checklist is readable without an account, by design. Your progress, notes and favorites are readable only by you.

Delete your account

This permanently removes every row keyed to your account: progress, notes, favorites, streaks, additions and tokens. The shared study content is unaffected.