Privacy

Short version: the calculator runs entirely in your browser and sends your numbers nowhere. The one piece of outside code on the page is a banner ad, and this page says exactly what that means.

Your calculator inputs

The vial amount, water, dose, and syringe you enter are used only by code running in your own browser. They are never sent to a server, logged, or stored. There is no account, no sign-in, and no database. Close the tab and nothing you typed remains anywhere but your own screen history.

What is stored on your device

Two small preferences are saved in your browser's local storage so the site behaves the way you left it: your light or dark theme choice, and whether you have already seen the first-run guide. These never leave your device and are not tied to any identity. Clearing your browser data removes them.

Advertising

DoseMath shows one banner ad, served by Adsterra, a third-party ad network. Like any web ad, it loads from Adsterra's own servers, which means your browser makes a request to them. In the course of serving an ad, an ad network typically receives your IP address, your browser and device type, the page the ad is on, and may set or read cookies or similar identifiers to deliver and measure ads. DoseMath does not control what Adsterra collects or how it uses it. Adsterra's own practices are described in its privacy policy at adsterra.com/privacy-policy. If you use an ad blocker, the ad and its requests do not load at all, and the calculator still works.

Fonts

The page loads its typefaces from Google Fonts, so your browser also makes a request to Google's font servers, which can see your IP address as part of delivering the fonts. No other third parties are involved.

What DoseMath does not do

No analytics, no tracking pixels, no session recording, no fingerprinting, and no selling of data. The only third-party requests the page makes are the ad and the fonts described above.

Changes

If this changes, the update will appear in the changelog with the date it shipped.