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
The calculators set no cookies. The shot log uses localStorage, which is not a cookie and is never transmitted. Clearing site data removes it permanently.
Advertising partners may set cookies on pages that carry ads, as described under Advertising below. Consent is requested first where the law requires it.
Third parties
Fonts are loaded from Google Fonts, which receives your IP address as part of serving the font files.
Page views are measured by Cloudflare Web Analytics, which sets no cookies and does not fingerprint or track you across sites. It records the page viewed, the referring site, and coarse device and country data.
Advertising
This site is supported by advertising. If you are in a region covered by the GDPR or similar laws, you will be asked for consent before any personalised advertising cookie is set, and you can decline.
Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and other sites on the internet.
You can opt out of personalised advertising at Google Ads Settings, or opt out of third-party vendor cookies at aboutads.info. Users in the EEA, UK and Switzerland can manage consent at any time through the consent dialog shown on first visit.
Advertising cookies are only set after consent where consent is legally required. Declining personalised advertising still shows ads — they are simply not tailored to your interests.
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.