Not a soundboard. Not a quiz. You put your own duck or goose call to your lips, blow one note into your phone, and our Animal Call Comparison Tool (U.S. Pat. No. 12,646,526) lines it up against a world champion’s recorded masters.
Practice at home — this is a practice-at-home trainer for your calling, not a field device. Takes about a minute. No account, nothing to install.
Duck and goose are the only two species with measured champion masters in the library today. Elk, deer and turkey have champion references in progress — we are not going to put up a band we have not measured.
Reading the measured library…
Before we ask: your browser will request the microphone because the engine has to hear the call you actually blow — and the audio is analyzed on this device, inside your browser; it is never uploaded, recorded, or sent to a server.
That is the champion reference itself — the same numbers the live meter would have drawn your note against. Nothing here is simulated, and we will not invent a score for a note we never heard.
The engine scores live browser capture on frequency, amplitude and timing only. The attack dimension is refused outright on this chain and we say so on-screen rather than printing a number we cannot stand behind. Champion masters and their provenance: every take, with its sha256. The patent record: patents & IP.