Privacy Policy

Last updated: September 6, 2026

What stays on your device

The calculator and the tracker run entirely in your browser. There is no account, no login, and no server that receives what you enter. Your browser's local storage holds the calculator's last inputs, your syringe choice, your theme preference, your analytics choice, and everything the tracker keeps: protocols, rotation labels, the dose log and vial counts. Clearing site data in your browser removes all of it, and so does the tracker's own delete control.

Analytics, only if you agree

We would like to know which tools get used, so we can improve them. On your first visit a banner asks whether we may load Google Analytics 4. Nothing loads unless you accept; declining or ignoring the banner is treated as a no. If you accept, Google Analytics sets its cookies and records aggregate usage such as page views and which calculator was used. It does not receive your doses, protocols or log. You can change your choice at any time with the Cookie preferences control in the footer, which also removes the analytics cookies.

Disclaimer

Nexa Labs is intended for research purposes only. Nothing on this site constitutes medical advice.

Feedback form

If you use the feedback form, the message you write, the optional email you give, and the page you were on are sent through Web3Forms, a form delivery service, so they can reach us. We use a reply address only to answer you. Nothing else is collected, and nothing is sold or shared.

Contact

Questions or corrections? Use the feedback form. Leave an email if you want a reply.