Simply great!

I cannot tell how accurate the measurements really are due to the surely limited capabilities of the built in iPhone 3GS mic, but at least these SW tools offer me possibilities which I otherwise only get on devices that cost many 100 €. For a long time Ive been looking for something like this for measuring the party rooms with pink noise. Even if the measurement is not accurate, it gives me a quick overview of the spectral signal response and in turn this tells me how to setup the equalizer. Apart from that, I can easily identify the feedback frequencies caused by the wireless microphone. And not to forget the SPL meter that helps a lot, not to exceed a certain SPL in critical locations.

Definitely worth the mony! I will probably also by the optional modules.

dj_bernd about AudioTools - dB, Sound & Audio