Last updated: 2026-09-05.
Cookies are small files a site stores in your browser. This page lists every one calangolingo uses. It is part of the privacy policy, and lives separately because a table is faster to check than a paragraph.
Not all of this is cookies
Most of what the site stores is not a cookie but local storage: it stays on your device and is never sent to any server on its own. It is what holds your progress when you have no account — which is why studying without signing in works just the same.
Essential
The site does not work without these, so they do not depend on consent.
| Name | Set by | Purpose | Lifetime |
|---|---|---|---|
| calangolingo:… (local storage) | this site | study progress, light/dark theme, sound on or off | until you clear it |
| calango_sessao | this site | keep you signed in after you log in with Google | 1 year |
| csrftoken | this site | stop another site from submitting forms in your name | 1 year |
The last two only appear if you create an account. Anyone who never signs in never gets them.
Measurement
Only with your consent, where consent is required.
| Name | Set by | Purpose | Lifetime |
|---|---|---|---|
| _ga, _ga_* | Google Analytics | tell visitors apart and count sessions, in aggregate | 2 years |
Advertising
Only with your consent, where consent is required.
| Name | Set by | Purpose | Lifetime |
|---|---|---|---|
| __gads, __gpi | Google AdSense | select ads, cap how often they repeat, and measure performance | up to 13 months |
| IDE, DSID and others from doubleclick.net | personalised advertising and conversion measurement | up to 13 months (24 for IDE) |
The full, always-current list of what Google uses in advertising is at types of cookies used by Google.
From the YouTube video
These are not ours and do not go through consent: YouTube writes them when a lesson page opens and loads the player script. They are listed here because this page promises all of them, not only the convenient ones.
| Name | Set by | Purpose | Lifetime |
|---|---|---|---|
| YSC | YouTube | video player session | the browser session |
| VISITOR_INFO1_LIVE, VISITOR_PRIVACY_METADATA | YouTube | player preferences and bandwidth estimation | up to 6 months |
| __Secure-YNID, __Secure-ROLLOUT_TOKEN | YouTube | browser identification and player version | up to 6 months |
On pages with no video — the home page, the game, the cards and these institutional pages — none of them appear.
How to change your choice
- Ads and measurement: the Cookie preferences button in the footer of any page reopens the consent notice.
- Measurement only, permanently in this browser: open any page with ?naomedir at the end of the address.
- In your browser: every browser can block or delete cookies in its settings. Blocking the essential ones signs you out.
- Personalised advertising, across all sites: Google Ads Settings.