Users of the Nadi Calendar (secure, account-based service)
Age Requirement: Nadi is intended for individuals aged 16 and over. We do not knowingly collect or process personal data from anyone under the age of 16.
3. The Data We Collect
We collect different types of personal data depending on how you interact with us.
A. Data you provide directly
Waitlist & account creation
Name
Email address
Country
Confirmation you are aged 16 or over
Payment information
Processed securely by our payment provider. We do not store full card numbers.
Women’s health data (special category data)
Collected only inside the Nadi Calendar, and only with your explicit consent:
Cycle length
Period start dates
Predicted fertile window
Optional cycle-related information you choose to enter
We do not collect pregnancy data, ovulation test information, or sexual health details unless these features are added in the future and explicitly agreed to.
B. Data collected automatically
When you visit our website, we may collect:
IP address
Browser and device details
Pages visited
Time spent on the website
Consent-based marketing and analytics data
Analytics and marketing cookies only run if you provide consent. Authentication cookies used inside the Nadi Calendar are strictly necessary.
C. Data from third parties
We may receive anonymised analytics or support-related information from:
Google Analytics
Meta (Facebook/Instagram)
Gamma (hosting provider)
Intercom (support tools)
We do not receive or purchase women’s health data from third parties.
4. How We Use Your Data
Public website & waitlist
To operate, secure, and improve our website
To process your waitlist sign-up
To send updates, information, and Nadi announcements
To improve user engagement and website performance
Nadi Calendar
To create and manage your account
To provide personalised cycle insights
To calculate predicted fertile windows
To support secure login and authentication
To process membership payments
To send service updates and support communications
Women’s health data (special category data)
We process health data only with your explicit consent, and only to:
Provide your cycle insights
Tailor your Nadi Calendar experience
We never:
Share health data with advertisers
Use health data for marketing
Sell health data
Use health data for automated decision-making with legal or significant impact
5. Legal Bases for Processing (UK GDPR / EU GDPR)
6. How We Share Your Data
We only share data with trusted processors who assist in delivering our service:
Withdrawing consent for health data will immediately stop processing and trigger deletion within 30 days.
11. Profiling and Predictions
The Nadi Calendar uses your cycle inputs to generate:
predicted fertile windows
cycle length patterns
This is informational only. It does not constitute medical advice or automated decision-making with significant effects.
12. Children’s Privacy (16+)
The Nadi website and Nadi Calendar are intended for individuals aged 16 or older.
We do not knowingly collect personal data from anyone under the age of 16. If we learn that personal data has been collected from a user under 16, we will delete the account and associated data promptly.
Users must confirm they are 16 or over during account creation.
13. Cookies and Tracking
We use cookies on our public website for analytics, performance, and marketing (only with consent). Inside the Nadi Calendar, only strictly necessary authentication cookies are used.