Privacy Policy
Last updated: October 14, 2026
This Privacy Policy explains how Cycle Sync ("we", "us") handles information when you use this website. By using the site you agree to this policy.
Information you give us
- Cycle details and logs: If you use the tracker, calendar or dashboard, the information you enter (such as period dates, mood, symptoms and notes) is stored in your own browser on your device. It is not sent to our servers in this version of the site.
- Account details: If you create an account, your name, email and a hashed password are stored in your browser only.
- Messages: If you contact us through the contact form, we receive the details you submit so we can reply.
Cookies and similar technologies
We use browser storage (such as local storage) to remember your cycle details and preferences. Third-party advertising partners, including Google, may use cookies to show ads.
Advertising
We use Google AdSense to display ads. Google and its partners use cookies to serve ads based on your visits to this and other websites. You can learn how Google uses data at policies.google.com/technologies/partner-sites, manage personalised ads at adssettings.google.com, or opt out of some third-party ad vendors at aboutads.info. Where required by law, we will ask for your consent before personalised ads are shown.
Analytics
We may use privacy-respecting analytics to understand which pages are visited. This data is aggregated and does not identify you personally.
How we use information
We use information to run the site, respond to messages, improve our content and show advertising. We do not sell your personal information.
Your choices
- You can delete your cycle data any time from Settings, or by clearing your browser data.
- You can block or delete cookies in your browser settings.
- You can ask us questions about your data through the contact page.
Children
This site is intended for adults and older teens. We do not knowingly collect personal information from children under 13.
Changes
We may update this policy and will change the date above when we do.
Contact
Questions about this policy? Visit the Contact page.