You cannot load your own custom sound or sample, to give it a different base sound. And it can't be used as an AU effect, to modify sounds coming from other apps. So you're stuck with just its one base sound, which I assume is a basic sine wave.
It would have been totally dope if it could be used as an AU effect, to modify any sound.
That said, it's an inexpensive app. So if all you ever wanted was a buzz or a hoot, with various amounts of wah wah, this is the ultimate app for exactly that. Go for it.
Show less