Cookie Policy
What this website remembers on your device, and how to control it.
Updated 12 October 2026
Cookies and local storage have different jobs
Cookies accompany matching web requests. Local storage stays in this browser until removed; session storage belongs to a tab and normally ends when that tab’s session ends. Browsers may restore sessions. This website uses these mechanisms for authentication, saved learning and interface behaviour. Vercel Web Analytics also measures aggregate public-page traffic, separately from saved learning.
Storage used by the current app
| Item | Purpose | Lifetime and controls |
|---|---|---|
Supabase authentication cookies (sb-…-auth-token, possibly split into chunks) | Maintain and refresh your signed-in session. Supabase also sets temporary PKCE verifier cookies for authentication links. | The installed Supabase SDK uses a 400-day cookie lifetime by default and may refresh or remove these cookies during authentication. Token/session validity is separate and depends on project settings; a cookie’s expiry does not guarantee that the session remains valid. Log out to end this browser’s session or clear site cookies. |
econsim-revision-v1econ-ace-attempts-v1 (local storage) | Guest lesson, flashcard and activity progress, plus question answers and results. | No time-based expiry; up to 5,000 guest attempts. Clear this domain’s site data to remove. These records are uploaded only if you choose Import guest progress. |
econ-ace-import-owner-v1 (local storage) | Account ID recording which account claimed this browser’s guest collection, to prevent accidental import into another account. | Kept until site data is cleared, including after logout/deletion. Clearing it removes that safeguard; do not reuse another person’s guest records. |
econ-ace-auth-event (local storage) | A random marker notifying other tabs when an account changes; not an advertising identifier. | Replaced at account changes and retained until site data is cleared. |
econ-ace-pending-v1 (session storage) | Pending learning changes and account ID, so failed saves can be retried after navigation or reload. | Removed when saved, on logout/account changes, or when the browser ends the tab session. Keep the tab open if changes have not saved. |
econsim:welcome-dismissed (session storage) | Remembers that you dismissed the welcome screen in this tab. | Normally the tab session; clear site data to reset. |
Your choices
Use My account to manage login, password and account deletion. Use your browser’s privacy/site-data settings for www.theeconace.com to remove local records and cookies. Blocking storage may prevent login or limit guest progress to the current page. Clearing local records is permanent for guest progress and does not delete cloud progress.
Vercel Web Analytics does not use analytics cookies or browser local storage for visitor identification. It uses a request-derived hash with a visitor session discarded after 24 hours. Clearing learning storage does not delete aggregate visitor statistics. No advertising pixels or analytics cookie-consent banner are currently implemented. See the Privacy Policy for the collected information and page exclusions.
Hosting security features can change independently of application code. Hosted cookie settings have not been separately audited. See our Privacy Policy for providers, retention limits and the outstanding privacy-contact details.