Your health data at Lyna
Last updated: 20 October 2026.
This page is a plain-language summary. Our Privacy Policy is the full version and takes priority. Lyna is provided by Lyna Cam UK Limited, 128 City Road, London EC1V 2NX (ICO registration ZB970320).
Our promises
We never sell your data. Not to advertisers, data brokers, insurers, employers, or pharmaceutical or supplement companies.
We never share health information with advertisers. No advertising trackers on health screens.
Research is your choice. Nothing beyond running Lyna for you happens unless you switch it on. Every choice starts off.
You're in control. Download your data, change your choices or delete your account at any time in Settings › Privacy.
What we collect
We collect
Your name, email and sign-in account
Date of birth, region and timezone
Cycle dates, symptoms, conditions, medications and supplements, weight, mood check-ins, allergies
Meals, meal photos, recipes, diet preferences
Community posts and comments you choose to share
Subscription and shop orders, delivery address
App usage and crash data (with no health content)
We don't collect
Precise location
Contacts
Face or other biometric data
Records from your doctor or the NHS
Full card numbers (our payment provider handles them)
How we use it
To build your plan and insights. This needs your consent, which you give when you sign up.
To run your account, subscription, orders and support.
To keep Lyna secure and fix problems.
To make anonymous statistics that can't identify anyone.
Research and improving Lyna (optional)
| Choice | What it means | Default |
|---|---|---|
| Help improve Lyna | Your logs, with your name and email removed, help improve features like the meal scanner | Off |
| Lyna Research | Your data, with your name and email removed, joins our research into cycle health, PCOS, menopause and nutrition. Results are only published as group figures. | Off |
| Share with research partners | Approved universities and research organisations can use that data for studies we list on our website. They can't identify you or use it for marketing. | Off |
| Invite me to studies | We may ask you to join a specific study. You decide each time. | Off |
Help improve Lyna
- What it means
- Your logs, with your name and email removed, help improve features like the meal scanner
- Default
- Off
Lyna Research
- What it means
- Your data, with your name and email removed, joins our research into cycle health, PCOS, menopause and nutrition. Results are only published as group figures.
- Default
- Off
Share with research partners
- What it means
- Approved universities and research organisations can use that data for studies we list on our website. They can't identify you or use it for marketing.
- Default
- Off
Invite me to studies
- What it means
- We may ask you to join a specific study. You decide each time.
- Default
- Off
You can switch any choice off at any time. We stop using your data for new work straight away. We can't undo results already published, because they can't be linked to you.
How we protect it
Encrypted in transit and at rest
Stored in the UK and EU
Only staff who need it can access it
Research data is kept apart from anything that identifies you
How long we keep it
While your account is open. Delete your account and we remove your data within 30 days (backups within 90 days). Shop records are kept for 6 years for tax.
Lyna is not medical care
Lyna is a nutrition tracking and education app. It does not diagnose or treat any condition, and it can't be used for contraception. Always follow your doctor's advice.
Questions or complaints
privacy@lyna.cam. You can also complain to the Information Commissioner's Office at ico.org.uk.