Cookie policy
Last updated 29 August 2026. This page explains the cookies used on calcuit.co.uk. The privacy policy covers personal data more broadly.
Cookies are small text files stored on your device. UK law (PECR) treats non-essential cookies as requiring a clear yes or no. On your first visit we show a banner with two equal choices: accept advertising cookies, or keep essential cookies only.
Cookies we set
| Name | Purpose | Duration | Type |
|---|---|---|---|
| calcuit_ad_consent | Stores whether you accepted or refused advertising cookies, and a matching value in localStorage if the browser allows it. | 180 days | Essential |
| authjs.session-token __Secure-authjs.session-token | Keeps you signed in after Google (or the demo account in development). Not set unless you sign in. | Session / Auth.js default | Essential when signed in |
| Google AdSense cookies (for example __gads, __gpi) | Set by Google to serve, limit and measure ads. The AdSense script that creates them is not loaded unless you accept. | Set by Google | Advertising |
How to change your mind
Use Cookie settings in the footer, or the button below, to open the banner again. Choosing Essential only after you previously accepted reloads the page so the AdSense script is removed. You can also delete cookies for calcuit.co.uk in your browser.