Privacy Policy
Your trust matters to me. This page says what data this site may hold and how it is used, in plain words.
Last up dated
Sep 25, 2026. If I change this page I will move this date up.
Who I am
This site is run by me from a small home desk. For any privacy question, write to [email protected] and I will answer you my self.
What I collect
The calculators and quizzes run in your browser. The numbers you type never leave your device and are never sent to me or any one else. There is no account system and no sign up, so there are no user profiles to store.
If you use the contact form I keep your name, your mail and your note so I can reply. I use it for that one thing only. I do not sell, rent or share it with any one who wants to spam you.
Like most sites, my host may log basic tech data when you visit. Browser type, the page you came from and the time of your visit. This does not tell me who you are.
Cookies
Cookies are tiny text files a site can put on your device. This site may use them to remember choices and to count page visits. You can turn cookies off in your own browser at any time and the tools will still work.
Analytics
This site uses Google Analytics to count visits and see which tools get used most. Google Analytics sets its own cookies and may collect data such as device type and pages viewed. You can opt out of Google Analytics with the official browser add on from Google. You can also browse with cookies blocked and every tool will still run.
Google AdSense and ad partners
This site shows ads to cover its costs. Those ads are served by Google AdSense and may also come from other ad firms. Here is what that means for you.
Third party sellers, such as Google, use cookies to show ads based on your past visits to this site or other sites. Google and its partners may use cookies such as the DoubleClick DART cookie to serve ads based on your visits across the web.
You can say no to the DART cookie at the Google ads opt out page. You can also opt out of many third party cookies at the Network Advertising Initiative opt out page. Turning cookies off does not block ads. It just makes them less tuned to you.
Your rights
If you live in a place with laws such as the GDPR in Europe or the CCPA in California, you have rights over your data. Ask me what I hold, ask me to fix it or ask me to wipe it. Mail me and I will act within a sane time.
Children
This site is not made for kids under 13 and I do not on purpose collect their data. If you are a parent and think your child sent me their data, mail me and I will wipe it right away.
Links out
My pages may link to other sites I do not run. Once you click out, their own privacy rules apply and not mine.