Privacy Policy

Last updated: June 5, 2026

What Data I Collect

I don't collect or store your data. Zero. All calculations happen in your browser. Preferences are saved locally - I can't see them.

Cookies

I use localStorage to remember your preferences - things like your theme choice and fall-asleep time. This data never leaves your device. If you clear your browser data, it's gone forever (even I can't recover it).

Analytics

I might use privacy-focused analytics (like Plausible) to see how many people use the tool and which features are popular. No individual tracking, no cookies, no creepy stuff. Just basic stats like "X people used the calculator today."

Advertising

This site may show ads through Google AdSense (gotta keep the lights on somehow). Google might use cookies to show you ads based on your browsing. You can opt out of personalized ads in Google's Ads Settings if that bothers you.

Questions?

If you have questions about this privacy policy, feel free to reach out.