The short version
We store your email, a hash of your Altwright password, session metadata, saved usernames and notes, and API key metadata. We do not store Roblox passwords, cookies, birthdays, or your vault contents. No analytics.
Cookies
One cookie: aw_sid, HttpOnly, SameSite=Lax. No analytics cookies.
Deletion
Deleting your account removes plans, keys, sessions, and recovery code immediately. It does not touch your local vault.