Last reviewed on 26 September 2026
Overview
This privacy policy describes how SleepCycleFinder (“we”, “our”, or “the site”) collects, uses, and protects information when you visit sleepcyclefinder.com. By using the site, you agree to the practices described here.
Who we are
SleepCycleFinder publishes general sleep-health articles and a sleep cycle calculator. The site is operated as an online publication; it does not require accounts, sign-ups, or payments. For contact details see the contact page.
What information we collect
Information you provide directly
If you email us at [email protected], we receive whatever you put in that message (your email address, name if provided, the content of the message). We use it only to reply to you and to improve the site.
Information collected automatically
When you load a page, certain technical information is logged automatically by our hosting provider and analytics tools, including:
- IP address (used to derive approximate location, then discarded or truncated by analytics).
- Browser type and version, device type, screen size, and operating system.
- Pages viewed, time on page, and the URL that referred you to the site.
- Date and time of access.
This information is used to understand which articles are useful, to detect technical problems, and to keep the site secure.
Information stored locally on your device
Some interactive tools save what you enter to your own browser using localStorage: the sleep log on the home page, the sleep diary on the sleep pattern analysis page, and your progress on the sleep hygiene checklist. That data stays on your device and is never transmitted to us; we have no user accounts and no server-side copy of it. The site also registers a service worker that keeps a copy of pages you have visited in your browser cache so they load faster and work offline. You can remove all of this by clearing your browser's site data for sleepcyclefinder.com.
Cookies and similar technologies
We use cookies and similar technologies to make the site work, measure traffic, and serve advertising. For a full description of which cookies we use and how to control them, see our cookies policy. In short, the cookies on this site fall into three groups:
- Strictly necessary — required for the site to function. SleepCycleFinder does not currently set any first-party cookies of its own; the tools described above use local storage instead.
- Analytics — Google Analytics 4, used to understand site usage in aggregate.
- Advertising — Google AdSense and its partners, used to serve and measure ads.
Google Analytics
We use Google Analytics 4 (measurement ID G-RB68E2MSHT) to understand which articles are read and how the site performs. Google Analytics may set cookies to distinguish unique visitors and sessions and may collect IP-address-derived information for approximate geolocation. You can opt out of Google Analytics by installing the Google Analytics opt-out browser add-on.
Google AdSense and ad personalisation
SleepCycleFinder is supported by display advertising delivered through Google AdSense. Google and its third-party advertising partners may use cookies, web beacons, and similar technologies to:
- Serve ads based on your prior visits to this site or other websites.
- Measure ad performance and limit how many times you see the same ad.
- Detect invalid traffic and fraud.
Google's use of advertising cookies enables it and its partners to serve ads based on your visit to our sites and other sites on the internet. You can opt out of personalised advertising by visiting Google Ads Settings. You can also opt out of a third party vendor's use of cookies for personalised advertising by visiting aboutads.info or YourOnlineChoices.
For more information, see Google's advertising policies and Google's privacy policy.
Third-party vendors and embedded content
Some pages embed images hosted by third-party services (for example, Unsplash). Loading those resources causes your browser to communicate directly with the third-party server, which may log standard request information (your IP address, browser, and referring page). We do not control what those third parties log, and their privacy practices are governed by their own policies.
How we use information
We use the information described above to:
- Operate, maintain, and secure the site.
- Understand which articles are useful and which need updates.
- Reply to messages you send us.
- Serve and measure advertising in line with this policy.
We do not sell personal information.
Legal bases (for users in the European Economic Area, UK, and Switzerland)
Where the GDPR or UK GDPR applies, our legal bases for processing are:
- Legitimate interests — running and securing the site, basic aggregate analytics, replying to direct messages.
- Consent — for non-essential cookies, including advertising and personalised advertising. You can withdraw consent at any time through your browser or through the opt-out links above.
Your rights
For readers in the European Economic Area, UK, and Switzerland (GDPR)
You have the right to access, correct, delete, restrict, or object to our processing of your personal data, and the right to data portability. To exercise these rights, email [email protected]. You also have the right to lodge a complaint with your local supervisory authority.
For readers in California (CCPA / CPRA)
California residents have the right to know what personal information we collect, the right to delete it, the right to correct it, and the right to opt out of the sale or sharing of personal information. We do not sell personal information in the conventional sense, but our use of advertising cookies may be considered “sharing” under the CPRA. To exercise these rights, email [email protected] with the subject line “CCPA request”.
Data retention
We retain analytics data for as long as the analytics provider's default retention period (currently 14 months for Google Analytics 4 in the most common configuration) and email correspondence for as long as we may need it to follow up on your message or comply with legal obligations.
Children's privacy
SleepCycleFinder is written for general adult readers. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal information, please email us so we can remove it.
Security
We take reasonable technical measures to protect the site and any data it processes. No website can be guaranteed perfectly secure, and we encourage readers not to send sensitive personal or medical information to us by email.
Changes to this policy
We may update this privacy policy from time to time. The “Last reviewed” date at the top of the page reflects the most recent change. Material changes will be highlighted at the top of the page for a reasonable period.
Contact
Privacy questions or requests: [email protected]. See our contact page for more.