Cookie policy
Last updated: 2 October 2026
This policy explains the cookies and similar technologies Kelvo uses on our marketing site (usekelvo.com) and on organisation booking sites at *.kelvo.co, and how you control them. It should be read with our Privacy Policy.
The categories we use
- Strictly necessary — required to run the site: signing in, keeping you signed in, and session continuity. These are set without consent because the service cannot work without them. You can block them in your browser, but parts of the site will break.
- Analytics (optional) — Google Analytics and Hotjar, to understand how the site is used so we can improve it. Hotjar also records anonymised replays of site visits and builds heatmaps of where people click and scroll. These are only set once you accept. Until then, and if you reject, no analytics cookies are stored.
- Marketing (optional, usekelvo.com only) — the Meta Pixel, which tells us which visits came from our adverts on Facebook and Instagram. You accept this separately from analytics, and it is never used on organisation booking sites.
Your choice, and how to change it
When you first visit we ask for your consent to analytics cookies. We use Google Consent Mode: analytics storage stays denied until you accept, and the Hotjar script is not loaded at all, so nothing is stored on your device beforehand. If you later withdraw consent we clear Hotjar’s cookies and stop the recording immediately. The Meta Pixel works the same way: it is not loaded until you accept marketing cookies, and withdrawing clears its cookies. You can change or withdraw your choice at any time using the “Manage cookies”link in the footer — withdrawing is as easy as giving consent. Your preference is remembered in your browser’s local storage (itself strictly necessary).
Cookies we set
| Cookie | Category | Purpose | Retention |
|---|---|---|---|
| Authentication / session | Strictly necessary | Keeps you signed in and secures your session. | Session / up to 30 days |
_ga, _ga_<id> | Analytics (consent) | Google Analytics — distinguishes visitors and sessions to measure usage. | Up to 2 years |
_hjSession*, _hjSessionUser*, other _hj* | Analytics (consent) | Hotjar — ties a visit together for heatmaps and session replay. | Session / up to 1 year |
_fbp, _fbc | Marketing (consent) | Meta Pixel (usekelvo.com only) — links a visit to an advert you clicked on Facebook or Instagram. | Up to 90 days |
| Google Consent Mode | Not a cookie | Google’s tags (Analytics and Ads) load on every visit to usekelvo.com, but in a restricted, cookieless state: until you accept, they store nothing on your device and send only cookieless signals. Accepting analytics or marketing cookies lifts the matching restriction; declining keeps it. | — |
_gcl_au, _gcl_aw | Marketing (consent) | Google Ads (usekelvo.com only) — links a sign-up or enquiry to a Google advert you clicked, so we can tell which adverts work. | Up to 90 days |
kelvo_attr | Analytics or marketing (consent) | Kelvo’s own (usekelvo.com only) — remembers the advert or link that first brought you to our site and the most recent one, so we know which campaigns work. | 90 days |
Google Analytics
We run two separate Google Analytics 4 properties: one for the marketing site and one for the organisation booking sites (*.kelvo.co). Analytics data is associated with the organisation whose site you are on so each organisation’s usage can be measured separately. Google acts as our processor for this data; see how Google uses data and the Google Analytics opt-out. We do not use Analytics for advertising or remarketing.
Hotjar
Hotjar gives us heatmaps and anonymised replays of site visits so we can see where people get stuck. Replays are pseudonymised: we suppress every form field on the site, so what you type — names, email addresses, payment details — is never recorded, and card details are handled inside Stripe’s own frames which are not captured at all. We never use replays to identify an individual. Hotjar acts as our processor and stores data in the EU; see the Hotjar privacy policy and their do-not-track / opt-out.
Meta Pixel
On our marketing site only, and only if you accept marketing cookies, we use the Meta Pixel to measure how well our adverts on Facebook and Instagram work — for example, how many people visit Kelvo after seeing one. It sends Meta the pages you view on usekelvo.com along with technical data such as your IP address and browser. Meta may combine this with information it already holds about you if you use its services, and it uses this data under its own terms as well as ours; see Meta’s privacy policy and your ad preferences. The pixel is never loaded on organisation booking sites, so bookings, payments and details about children are never sent to Meta.
Contact
Questions about cookies? Email hello@usekelvo.com.