Audiometer is an application which plays a pure sine audio signal with the the input frequency and volumes. This is not a medical application and is for entertainment purposes only.

Audiometer can be used to tune a guitar and any other musical instrument for people who prefer to tune their instruments manually. Non standard tune ups can easily be performed but a standard tune up of E4, B3, G3, D3, A2, E2 is even easier as there are menu options which allow for these standard tones to be played with a single click.

In addition, Audiometer can be used to play higher frequencies as a dog calmer or dog caller, just like a whistle. A preferred and somewhat unique ( different than the standard, over the shelf, whistles ) frequency can be chosen.