LYNA Cookie Policy
Last updated: 20 October 2026. Version 2.0.
This policy explains the cookies and similar technology used on lynahealth.app and in the Lyna app, and how to control them. It is provided by Lyna Cam UK Limited, 128 City Road, London EC1V 2NX (see our Privacy Policy for full details).
1. What these technologies are
Cookies are small files a website saves on your browser. Apps use similar technology: software development kits (SDKs), device identifiers and local storage. In this policy, "cookies" covers all of them.
2. Our promise on health pages
We do not place advertising cookies, pixels or SDKs on any page or screen that shows or collects health information, such as cycle, condition or symptom pages, and we never pass health information to advertising or analytics companies.
3. The categories we use
Strictly necessary
- What it does
- Sign-in, security, remembering your cookie choices, the shop basket, fraud prevention
- Your choice
- Always on; the Service cannot work without them
Appearance and preferences
- What it does
- Remembering language and display settings
- Your choice
- On by default; you can turn them off
Statistics
- What it does
- Counting visits and seeing which features are used, so we can improve Lyna. No advertising use.
- Your choice
- On by default; you can turn them off at any time in Cookie Settings (website) or Settings › Privacy (app)
Marketing
- What it does
- Measuring whether our adverts work
- Your choice
- Off unless you say yes
Under UK law (the Privacy and Electronic Communications Regulations, as amended by the Data (Use and Access) Act 2025), statistics and appearance cookies can be set without consent as long as you can easily opt out. Marketing cookies always need your consent.
4. Cookies on lynahealth.app
The main cookies are listed below. The full, current list is always shown in Cookie Settings.
session_id
- Provider
- LYNA
- Category
- Strictly necessary
- Purpose
- Keeps you signed in
- Expires
- End of session
preferences
- Provider
- LYNA
- Category
- Preferences
- Purpose
- Remembers your settings and cookie choices
- Expires
- 1 year
_ga
- Provider
- Google Analytics
- Category
- Statistics
- Purpose
- Counts visits and how the site is used
- Expires
- 2 years
_gid
- Provider
- Google Analytics
- Category
- Statistics
- Purpose
- Tells visits apart
- Expires
- 24 hours
marketing_id
- Provider
- LYNA or advertising partner
- Category
- Marketing (only with consent)
- Purpose
- Measures whether our campaigns work
- Expires
- 6 months
5. SDKs in the Lyna app
Crash reporting
- Category
- Strictly necessary
- Purpose
- Find and fix crashes
- Data it receives
- Device model, app version, crash log
Subscription management
- Category
- Strictly necessary
- Purpose
- Check your subscription status
- Data it receives
- App store purchase ID
Push notifications (Apple, Google)
- Category
- Strictly necessary
- Purpose
- Deliver notifications you turn on
- Data it receives
- Device token
Product analytics
- Category
- Statistics
- Purpose
- See which features are used
- Data it receives
- A random ID and app events, with no health content
Install attribution
- Category
- Marketing (only with permission)
- Purpose
- See which advert led to an install
- Data it receives
- Advertising ID, only if you allow tracking
On iPhone we ask for permission before any tracking across other companies' apps (App Tracking Transparency). If you say no, marketing SDKs do not receive your advertising identifier.
6. How to control cookies
- Website: use the Cookie Settings link at the bottom of every page. Rejecting is as easy as accepting.
- App: go to Settings › Privacy.
- Browser and phone settings: you can block or delete cookies, or reset your advertising ID. Blocking strictly necessary cookies may stop parts of the Service from working.
We ask for your marketing choice again every 12 months, or sooner if we add a new marketing provider.
7. Third-party content
If we embed videos or social media posts, those providers may set their own cookies, but only after you agree to them through Cookie Settings.
8. Changes and contact
We update this policy when our cookies change. Questions: privacy@lyna.cam.