This Privacy Policy explains how Daily Sleep Calculator ("we", "our", "the site") collects, uses, and protects information when you visit this website.
The sleep calculator itself runs entirely in your browser — the times you enter are not sent to or stored on our servers. We may automatically collect limited technical information such as your approximate location (country/city level), browser type, device type, and pages visited, typically through analytics and advertising cookies described below.
Cookies are small text files stored on your device. We use cookies and similar technologies to:
You can control or delete cookies through your browser settings. Blocking cookies may affect how some parts of the site function.
This site may display advertisements served by Google AdSense and other third-party ad networks. These providers may use cookies (including the DoubleClick cookie) to serve ads based on your prior visits to this or other websites.
Our site may contain links to external sites, including social sharing platforms and the research sources cited in our blog. We are not responsible for the privacy practices of those third-party websites.
This site is not directed at children under 13, and we do not knowingly collect personal information from children.
You can manage cookie preferences using the cookie banner shown on your first visit, or by adjusting your browser's cookie settings at any time.
We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated revision date.
If you have questions about this Privacy Policy, visit our Contact page or email contact@example.com.
If you use the Weekly Sleep Tracker, your entered sleep times are stored locally in your browser using local storage. This tracker data is not sent to or stored on our servers by the tracker itself. You can remove it using the Reset Week button or by clearing your browser storage.