AboutColophonWhat this is, where every figure comes from, and what it refuses to do.

FieldDx is a clinical reference for livestock and companion animals, built to be used away from a clinic: on a phone, in sunlight, with no signal and no account. It matches the signs an animal is actually showing against a list of conditions, gives the drugs those conditions are treated with, works the dose out for the animal's body weight, and states the milk and meat withdrawal where the source names one.

It is a formulary and a differential list. It is not a diagnosis, and it is not a clinic management system. Nothing is stored on a server; nothing is sent anywhere.

Where two books publish different figures for the same thing — and for normal temperatures and pulse rates they very often do — both are shown, each with its own citation. They are never averaged into a single number the books do not give.

Extracts are condensed and attributed, never reproduced whole. The source volumes are copyrighted and are not distributed with the app.

Install it once and the whole app — pages, fonts, icons and the data file — is stored on the device. When there is a signal it loads the current copy from the server; the instant that signal drops, it falls back to what is stored on the device with no error and no lost work, so it still opens and works with the phone in flight mode. There is no sign-in, no analytics, no third-party script and no cookie; the app loads nothing from any host other than its own.

Case sheets you save on the Review page stay in that browser's own storage on that device. They are never uploaded, and clearing the browser's site data deletes them.

A figure that looks wrong, a citation that does not match the book, or a drug that should be here and is not — those reports are the most useful thing anyone can send. Contact.