Cookie Policy
Last updated: 31 May 2026
1. What Are Cookies
Cookies are small text files that are placed on your device (computer, tablet, or mobile phone) by a website or web application when you visit it. They allow the website to recognise your device and remember certain information about your visit, such as your preferences or login state.
Cookies are widely used to make websites work more efficiently and to provide information to the website owner. Some cookies are strictly necessary for the website to function; others are used to improve your experience or to provide analytics data.
In addition to cookies, we may also use similar tracking technologies such as web beacons (also known as pixel tags), local storage, and session storage. References to "cookies" in this policy include all such similar technologies.
This Cookie Policy should be read alongside our Privacy Policy at circinova.com/legal/privacy, which provides further information about how we handle your personal data.
2. How We Use Cookies
We use cookies for the following purposes:
- Essential operation: To allow you to log in, maintain your session, and navigate the Service securely.
- Security: To protect against cross-site request forgery (CSRF) attacks and other security threats.
- Personalisation: To remember your preferences such as UI theme, language, and notification settings.
- Analytics (with your consent): To understand how users interact with the Service so we can improve it.
- Customer support: To remember your support preferences.
- Consent management: To record your cookie preferences so we do not ask again on subsequent visits.
3. Types of Cookies We Use
3.1 Essential Cookies
These cookies are strictly necessary for the Service to function. They cannot be disabled without breaking core functionality. No consent is required to set these cookies.
| Cookie Name | Purpose | Type | Duration |
|-------------|---------|------|----------|
| sessionid | Maintains your authenticated session so you remain logged in as you navigate the application | HTTP Cookie (HttpOnly, Secure) | Session (cleared when browser is closed) |
| csrftoken | Protects against cross-site request forgery attacks by associating each form submission and state-changing API request with a unique token tied to your session | HTTP Cookie (Secure) | 1 year |
3.2 Functional Cookies
These cookies enable enhanced functionality and personalisation. They are set based on actions you take in the Service. No consent is required as they are set in response to your direct requests.
| Cookie Name | Purpose | Type | Duration |
|-------------|---------|------|----------|
| circinova_theme | Stores your preferred UI theme (light or dark mode) so it persists across sessions | HTTP Cookie | 1 year |
| circinova_sidebar_state | Remembers whether the navigation sidebar is expanded or collapsed | HTTP Cookie | 30 days |
| circinova_locale | Stores your preferred date and time format locale | HTTP Cookie | 1 year |
3.3 Analytics Cookies
These cookies are set by PostHog to help us understand how visitors use the Service. We only set these cookies if you have given your consent via our cookie banner. If you decline analytics cookies, PostHog will not be loaded and no tracking will occur.
| Cookie Name | Purpose | Type | Duration |
|-------------|---------|------|----------|
| ph_distinct_id | PostHog — assigns a unique anonymous identifier to your browser session, enabling PostHog to track your interactions across page views and sessions without linking them to your identity | HTTP Cookie | 1 year |
| ph_session_id | PostHog — identifies the current browsing session for analytics aggregation | HTTP Cookie | 30 minutes (rolling) |
| _ph_* | PostHog — various PostHog internal cookies used for feature flags, A/B testing state, and analytics event queuing | HTTP Cookie | Varies (session to 1 year) |
| posthog_ | PostHog — alternative prefix used by some PostHog SDK versions for the same purposes as above | HTTP Cookie | Varies |
All PostHog analytics data is processed in accordance with PostHog's privacy policy. Analytics data is used solely for product improvement and is not sold to third parties.
3.4 Consent Cookies
This cookie records your cookie preferences and is always set when you interact with our cookie banner. It is required to remember your choice and cannot be disabled.
| Cookie Name | Purpose | Type | Duration |
|-------------|---------|------|----------|
| circinova_cookie_consent | Records whether you have accepted or declined optional analytics cookies, so we do not present the consent banner on every page visit | HTTP Cookie | 1 year |
4. Managing Cookies
4.1 Cookie Banner
When you first visit circinova.com, we display a cookie consent banner that allows you to accept or decline optional analytics cookies. You can update your preferences at any time by clicking the "Cookie Settings" link in the footer of any page.
4.2 Browser Settings
Most browsers allow you to control cookies through their settings. You can configure your browser to:
- Notify you when cookies are being set
- Block all third-party cookies
- Block all cookies
- Delete cookies when you close your browser
The method for managing cookies varies by browser. Please refer to your browser's help documentation:
- Chrome: Settings > Privacy and security > Cookies and other site data
- Firefox: Settings > Privacy & Security > Cookies and Site Data
- Safari: Preferences > Privacy > Manage Website Data
- Edge: Settings > Cookies and site permissions > Cookies and site data
Please note that disabling essential cookies may prevent you from logging in or using core features of the Service.
4.3 Opt-Out Tools
You can opt out of PostHog analytics tracking across websites by using the PostHog opt-out mechanism at posthog.com/optout. This sets a browser-level opt-out flag.
5. Third-Party Services
5.1 PostHog
PostHog is a product analytics platform. When analytics cookies are enabled, PostHog records page views, click events, and user journeys within the Service to help us understand usage patterns. PostHog does not receive personal identity information unless you are logged in and we have enabled user identification (in which case PostHog receives only a pseudonymous user ID). PostHog's privacy policy is available at posthog.com/privacy.
Data collected by PostHog may be transferred to the United States. We rely on Standard Contractual Clauses (SCCs) to ensure your data receives adequate protection in transit.
5.2 Stripe
Stripe may set cookies on circinova.com pages that include Stripe payment elements (such as our billing and checkout pages). These cookies are necessary for Stripe to process payments securely, detect fraud, and comply with financial regulations. Stripe's cookie policy is available at stripe.com/gb/cookie-settings.
6. Updates to This Policy
We may update this Cookie Policy from time to time to reflect changes in the cookies we use or changes in applicable law. We will update the "Last updated" date at the top of this policy when we make changes. For material changes, we will notify you via the cookie banner or by email. We encourage you to review this policy periodically.
7. Contact
If you have any questions about our use of cookies, please contact us:
Circinova (sole trader) Email: privacy@circinova.com United Kingdom