Privacy
Last updated: 2025-09-01
What we do (and don’t) collect
- We don’t require accounts and we don’t upload your inputs (dates, holidays) to a server — calculations run in your browser.
- Our host may keep standard server logs (e.g., IP address, user‑agent) for security and operations.
Cookies & Ads
- Third‑party vendors, including Google, use cookies to serve ads based on a user’s prior visits to this and other websites.
- Google’s advertising cookies enable Google and its partners to serve ads to you based on your visit to our site and/or other sites on the Internet.
- You can opt out of personalized advertising via Google’s Ads Settings, and you can learn how Google uses information from sites.
If you’re in the EEA/UK/Switzerland, we will use a Google‑certified consent management platform (CMP) to obtain and store consent choices as required by Google’s EU User Consent Policy when ads are enabled.
Analytics (optional)
If analytics are enabled (e.g., Plausible or GA4), we use them to understand usage trends and improve the site. We don’t use analytics to identify individual users.
Contact
Email: hello.daymath@outlook.com
Data retention
If you email us, we’ll keep your message long enough to reply and for basic record‑keeping. Ask anytime if you want us to delete a message thread.
Changes
If this policy changes, we’ll update the date above and publish the new version here.