Cookies Policy
Effective date: September 28, 2026
This Cookies Policy explains how Islington Partners LTD (“Calendr”, “we”, “us”) uses cookies and similar technologies on calendr.so and in the Calendr application. Non-essential cookies are used only if you consent through our cookie banner or the Cookie settings control in the site footer.
1. What are cookies?
Cookies are small text files stored on your device. We also use similar technologies such as local storage for cookie preferences.
2. How we obtain consent (PECR)
Before you make a choice, we do not load Google Analytics, Google Tag Manager scripts, Meta Pixel, or related marketing identifiers.
You can choose Accept all, Reject all, or Manage preferences with separate analytics and marketing options. Rejecting is as easy as accepting. You can withdraw consent at any time using Cookie settings in the site footer (on pages where our marketing cookie tools are available).
Public booking pages: Google Analytics and Meta Pixel never load on public client booking pages, even if you previously consented on the main calendr.so site.
3. Cookie and storage inventory
| Name | Provider | Purpose | Category | Party | Duration | Essential |
|---|---|---|---|---|---|---|
_calendr_session |
Calendr | Signed-in session and security | Essential | First | Session / browser dependent | Yes |
calendr_cookie_preferences (cookie and local storage) |
Calendr | Stores consent version, categories, and timestamp | Essential | First | Up to 12 months | Yes |
calendr_marketing_consent |
Calendr | Server-readable summary of marketing consent for Measurement Protocol / CAPI | Essential | First | Up to 12 months | Yes |
ahoy_visit |
Calendr (Ahoy) | First-party product analytics and visit attribution | Functional | First | Up to 13 months (server retention when purge jobs run) | No |
calendr_ga4_context |
Calendr | Links server events to GA4 client/session after analytics consent | Analytics | First | 90 days | No (analytics consent) |
_ga, _ga_*, _gid |
Google Analytics | Website analytics on calendr.so | Analytics | Third | Set by Google (typically up to 24 months) | No |
_fbp, _fbc |
Meta | Advertising measurement on calendr.so | Marketing | Third | Set by Meta (typically up to 90 days) | No |
| Stripe cookies | Stripe | Payment and fraud prevention during checkout | Essential | Third | Varies (see Stripe documentation) | Yes (when paying) |
| Google / Microsoft OAuth cookies | Google / Microsoft | Sign-in and calendar connection when you use those features | Essential / functional | Third | Set by provider | Yes (when used) |
4. Managing cookies
Use Cookie settings in the footer on calendr.so marketing pages, or your browser settings. Withdrawing consent prevents future optional scripts and removes known first-party marketing cookies where possible; the page may reload to stop scripts already loaded.
5. More information
See our Privacy Policy and the ICO guide to cookies: ico.org.uk — cookies and similar technologies.