Sleep Cycle Calculator ("we", "our", or "the site") is committed to protecting your privacy. This policy explains what information is collected when you use this website and how it is used.
This site is a free, browser-based tool. We do not require account creation, and we do not collect or store any personally identifiable information on our servers.
We do not directly collect personal information. However, third-party services used on this site may collect certain data automatically:
All inputs you enter into the calculator (bedtime, wake-up time, age group) are processed entirely in your browser and are never transmitted to any server.
This site uses cookies through third-party advertising and analytics services. Cookies are small text files stored on your device that help these services function.
Types of cookies used on this site:
You can control or disable cookies through your browser settings. Note that disabling cookies may affect the functionality of some features.
This site uses Google AdSense to display advertisements. Google may use cookies and web beacons to serve ads based on your prior visits to this and other websites.
Google's use of advertising cookies enables it and its partners to serve ads based on your visit to this site and/or other sites on the Internet.
You may opt out of personalized advertising by visiting Google Ads Settings or aboutads.info.
For more information on how Google uses data, please visit Google's Privacy Policy.
This site may use the following third-party services, each with their own privacy policies:
We do not sell, trade, or share your information with any other third parties.
This site is not directed at children under the age of 13. We do not knowingly collect any personal information from children. If you believe a child has provided personal information, please contact us and we will promptly remove it.
Depending on your location, you may have the following rights regarding your data:
For California residents (CCPA): You have the right to opt out of the sale of personal information. This site does not sell personal information directly. To opt out of Google's data practices, visit Google Ads Settings.
The information provided by Sleep Cycle Calculator is for general informational purposes only. It is not intended as medical advice and should not be used as a substitute for professional medical consultation, diagnosis, or treatment.
Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition or sleep disorder.
We may update this Privacy Policy from time to time. Any changes will be reflected by updating the "Last updated" date at the top of this page. Continued use of this site after changes constitutes acceptance of the updated policy.
If you have any questions about this Privacy Policy, please reach out via our contact form: