Privacy Policy
Last updated: January 2026
Overview
NightOwl Sleep Calc is a free sleep calculator. We respect your privacy and keep data collection to a minimum. This policy explains how information is handled on our website.
What We Collect
Contact Form: If you contact us, we receive your name, email, and message through Formspree, a third-party form service.
Local Storage: Your calculator settings (like sleep latency and cycle length) are saved in your browser. This data stays on your device and is never sent to us.
Advertising & Cookies
We display ads through Google AdSense. Google may use cookies to show you relevant ads based on your browsing activity. You can opt out at Google's Ads Settings or learn more at Google's Privacy & Terms.
You can disable cookies in your browser settings, though this may affect ad display.
Third-Party Services
We use Formspree for contact forms and Google AdSense for advertising. These services have their own privacy policies.
Children
This website is not intended for children under 13.
Changes
We may update this policy occasionally. Changes will be posted here with an updated date.
Contact
Questions? Contact us.