Privacy Policy

Last updated 2026.

Calculator inputs

Every calculator on this site runs entirely in your browser. The numbers you type — doses, vial amounts, sequences, and so on — are never sent to a server, never stored in a database, and never saved to your browser's local storage. When you close or reload the page, your inputs are gone.

Cookie preference

This site sets no tracking, analytics, or advertising cookies. The accept/reject banner stores exactly one value — cookie-consent — in your browser's local storage, so the banner doesn't reappear on later visits. That value is never sent to a server, is not a cookie in the technical sense, and doesn't identify you. It exists so that if an optional, non-essential cookie is ever added, there's already a real preference to honor — see “Analytics and advertising” below.

Accounts

There is no login, no account system, and no user database. This site cannot identify you as a returning visitor.

Hosting-level logs

Like any website, requests to this site pass through infrastructure (our hosting provider, Cloudflare Pages) that may record standard technical logs — such as IP address, requested URL, and user agent — for operating and securing the service. This is infrastructure-level logging, not something this site's code collects or has access to for analytics purposes.

Analytics and advertising

As of this version of the site, no analytics, tracking, or advertising scripts are included. If that changes in the future, this policy will be updated first to disclose what is added and why.

Fonts

This site uses two typefaces, IBM Plex Sans and IBM Plex Mono. They are bundled and self-hosted at build time rather than loaded from Google's servers at runtime, so visiting this site does not send a request to a font provider or expose your IP address to one.

Third-party services

This site does not embed third-party widgets — no chat tools, comment systems, ad networks, or social embeds. The only outside party involved in serving this site is the hosting provider described under “Hosting-level logs” above.

Data retention

There is nothing for this site to retain: calculator inputs are never transmitted or saved, and no account or profile data exists to begin with. The one value this site does store — cookie-consent, described above — stays in your browser until you clear your browser's site data; this site has no way to delete it remotely. Hosting-level request logs are kept and rotated according to the hosting provider's own retention schedule, not this site's.

Changes to this policy

If what this site collects or how it's handled ever changes — for example, if analytics are added — this page will be updated to describe the change before it takes effect, and the “last updated” date above will reflect it.

Contact

Questions about this policy can be sent via the contact page.