Useful – Audio Function Generator Review

I have a foreign low frequency (around 60-70Hz) messing up with my ears in my home and I wanted something to easily match the exact frequency I hear. Being able to fine tune the frequency in the free version it allowed me to precisely match the noise that is troubling me (but I still can't identify the source, though) This app is perfect, and the plethora of options in the free version made me review it without being asked to.
Review by ios 5 was the best on Audio Function Generator.