About
I once needed to generate sound at given frequency ad hoc for discussion purposes. Sadly no app on the Firefox OS market provided such functionality. And so I wrote this simple app to generate w/e you want.
How to use and other infos
Well, all you have to do is insert the frequency you want the sound to be generated at and push the button start/stop. Those speak for themselves. In theory you could plug your phone to a good quality sound output device and generate sounds beyond 20 kHz. Sadly, from my experiences, you can't generate more than 19 kHz sound on a mobile device speaker. Keep that in mind while annoying the dogs.. I mean, while testing.