Browser storage

Cookies & local storage

These cookies and stored data are everything we keep in your browser.

NameKindPurposeLifetime
gsc_session Cookie (httponly) Keeps you signed in to an account. Only set after you sign up or log in. 30 days, or until you log out
gsc_lang Cookie (script-readable) Remembers which language you chose, so the site opens in the right language next time. Contains no personal data. One year, or until you clear it
gsc_admin_session Cookie (httponly) Keeps an administrator signed in to the admin portal. Only set for administrators, and only on /admin. 15 minutes, or until you log out
gsc_upload_owner Cookie (httponly) No longer set. An upload now belongs to your account and is only visible to you. 7 days
gsc_crash_id Cookie (httponly) Carries a short-lived reference number when something goes wrong, so an error message can be linked to a log entry. Contains no personal data. One hour
caddium_session_id sessionStorage Points at your in-progress upload while you fill in the optional context fields. Closed when the browser tab closes
caddium_context sessionStorage Carries your optional "about you" answers from Upload through to Results. Closed when the browser tab closes
caddium_language localStorage Remembers which language you chose, for when your browser refuses cookies. It is a copy of the language cookie above and holds only the language code. Until you delete it
caddium.installHint.dismissed localStorage Remembers that you tapped "Not now" on the tip to put this site on your home screen, so we do not show it again. Holds only a tick mark. Until you delete it
caddium-plan-sessions:<id> localStorage Old storage for the practice moments you ticked off in your practice plan. On your next visit to the practice plan it moves to your account and disappears from your browser. Nothing new is added. The name points to the analysis it belongs to. Until your next visit to the practice plan, or until you delete it
caddium_ball_choice localStorage Remembers your last answer to "Did you hit a ball?", so that answer is already selected next time. Holds only that answer. Until you delete it
lab.tour localStorage Remembers that you have seen the tour of the Lab, so it does not come back every time. Contains only a tick. Until you delete it
caddium-shell-<version> Cache Storage Keeps the offline page and files of the site, such as the layout, the fonts and the scripts, so the site loads faster and you get a clear message when you have no connection. Nothing about you is in it: no account pages, no analyses, no videos. Until a new version of the site replaces it, or until you delete it

There is no advertising or third-party analytics, and no third-party cookies. Nothing here is used to identify you across other websites.

What we do measure

We keep a daily count of how often each page is opened. Nothing more. We store nothing that identifies you: no cookie, no IP address, no session. Two visits from the same person and two visits from two people look identical to us.

We use these counts to see which pages are being read and whether Caddium is growing. They are not shared with anyone else.