Last updated: 22 October 2026.
The short version: this site does not have accounts, does not run advertising trackers, and does not sell anything about you to anyone.
What is collected
Nothing you type into a calculator leaves your browser. Dose, yield, TDS readings and the shot log are computed locally with JavaScript and, in the case of the log, stored in your browser's localStorage on your own device.
Like any website, the server that delivers these pages sees standard request data — IP address, browser user agent, the page requested. This is ordinary server logging, retained briefly for security and debugging, and is not used to build profiles.
Cookies
No tracking cookies. The shot log uses localStorage, which is not a cookie and is never transmitted. Clearing site data removes it permanently.
Third parties
Fonts are loaded from Google Fonts, which receives your IP address as part of serving the font files. No other third-party scripts are loaded.
Children
This site is not directed at children and collects no personal information from anyone.
Changes
If this policy changes, the date at the top changes with it.