Privacy Policy
This site doesn't ask you to sign up and doesn't sell personal data.
Analytics
We use Google Analytics 4 to count visits and see which pages are useful. It sets cookies and records information such as the pages you view, your approximate location, device and browser. Google processes this data under its own privacy policy. You can opt out with Google's browser add-on or by blocking cookies.
Tools
The sharpening angle tool and grit chooser run entirely in your browser. What you enter isn't sent to us; it's only kept in the page address so you can share a result.
Affiliate links
When you follow an affiliate link, the retailer may set its own cookies to credit the referral. See the affiliate disclosure.
Hosting
The site is hosted on Vercel, which keeps standard server logs (such as IP address and request time) for security and operations.