Legal
Cookie Policy
Effective date: 8 December, 2025
Last updated: 8 December, 2025
1. What are cookies?
This Cookie Policy explains what cookies are, Nadi use them, the types of cookies we use, and how you can manage your cookie settings. Cookies are small text files stored on your device when you visit a website. They help the site function properly, improve security, support features, enhance user experience, and allow us to understand website performance. Cookies used on our public website are different from cookies used inside the Nadi Calendar, which is our secure, login-only area.
2. How we use cookies?
We use both first-party cookies (set by Nadi) and third-party cookies (set by services we use, such as analytics and hosting providers). We use cookies to:
- operate the website securely
- remember your consent preferences
- understand how visitors use our website
- improve site performance
- deliver relevant content and advertising (with consent)
- support secure login to the Nadi Calendar
Non-essential cookies (analytics and marketing) only load after you give consent through the cookie banner.
3. Cookies on the public website (nadi.health)
These cookies fall into four categories: Necessary, Functional, Analytics, and Marketing.
A. Necessary Cookies (always active)
These cookies support site security, performance, localisation, and consent management. They do not store personal information for advertising or tracking purposes.
| Cookie | Duration | Purpose |
|---|---|---|
| cookieyes-consent | 1 year | Stores your cookie consent preferences. |
| gamma_locale | Session | Remembers your language preference. |
| gamma_logged_out | 19 days | Identifies logged-out browser state for Gamma hosting. |
| gamma_visitor_id | 31 days | Used by Gamma for basic functionality and site optimisation. |
| gamma_location | 13 days | Determines approximate location for localisation and security. |
| OptanonConsent | 1 year | Stores consent status for cookie categories. |
| __cf_bm (Cloudflare, if present) | 1 hour | Protects the site from malicious traffic. |
B. Functional Cookies
These support features like Intercom (site chat/help support).
| Cookie | Duration | Purpose |
|---|---|---|
| intercom-device-id-* | 63 days | Helps Intercom recognise returning visitors; used for support/tooltips. |
| intercom-session-* | 7 days | Maintains an active session within Intercom features. |
(Note: These do not run behavioural tracking and are classified as functional rather than analytics.)
C. Analytics Cookies (consent required)
These help us understand website traffic and usage patterns.
| Cookie | Duration | Purpose |
|---|---|---|
| _ga | 1 year 1 month | Used by Google Analytics to distinguish users. |
| ga* | 1 year 1 month | Counts page views and stores session-level analytics. |
| gaJTML… / gaN8YD… | 1 year 1 month | GA4 property-specific cookies storing unique session IDs. |
| ajs_anonymous_id | 1 year | Used by Segment/Amplitude to understand anonymous visitor behaviour. |
| ajs_user_id | 1 year | Associates visits with a user ID where provided (e.g. sign-up forms). |
Analytics cookies only load after consent is provided.
D. Marketing Cookies (consent required)
Used to understand marketing performance and deliver relevant advertising.
| Cookie | Duration | Purpose |
|---|---|---|
| _fbp | 3 months | Used by Meta to deliver, measure, and improve advertising campaigns. |
4. Cookies used inside the Nadi Calendar (secure login area)
The Nadi Calendar is a private, secure, login-only area where users can track their menstrual cycle phases, cycle length, and receive predicted fertile window insights. Because these functions require authentication, the Calendar uses a small number of strictly necessary cookies to maintain secure sessions.
These cookies do not track users for analytics or advertising, and they are only set after you log in.
| Cookie | Duration | Purpose |
|---|---|---|
| sb-access-token | Session | Authenticates your session securely within the Nadi Calendar. |
| sb-refresh-token | Persistent | Allows your login to remain active without repeatedly signing in. |
These cookies are essential for securing your account and protecting any sensitive health information you choose to add to the Nadi Calendar.
5. Sensitive data within the Nadi Calendar
The Nadi Calendar may process health-related information that you enter, such as:
- cycle length
- predicted fertile window
This information is never stored in cookies.
It is stored securely in our database (Supabase) with strict access and encryption controls. A full explanation of how we protect health data appears in our Privacy Policy.
6. International data transfers
Some third-party providers (such as Google, Meta, Intercom, and Supabase) may process data outside your country, including in the United States. When this occurs, we ensure appropriate safeguards are in place as required under UK GDPR/EU GDPR.
7. Managing your cookie preferences
You can modify your preferences at any time by clicking Consent Preferences on our website. You can withdraw consent for analytics or marketing cookies whenever you choose.
You can also block or delete cookies via your browser settings:
- Chrome: https://support.google.com/accounts/answer/32050
- Safari: https://support.apple.com/guide/safari/manage-cookies-and-website-data-sfri11471/mac
- Firefox: https://support.mozilla.org/kb/clear-cookies-and-site-data
For other browsers, please consult their support documentation.
8. Updates to this policy
We may update this Cookie Policy to reflect product changes or legal requirements. Any changes will be posted here with an updated effective date.