Great app!

Being for the ipad it is very convenient and easy to use. Fast and easier than pulling out the old laptop. Using the internal mic of my iPad 3 it appears to be very accurate. Easily save graphs to compare later. Hopefully Andrew comes out with a waterfall graph soon. Using the FFT module to adjust and flatten out my sub as it has the 1/12 and lower octave measurement to eq my sub more precisely.

Frank D1 about AudioTools - dB, Sound & Audio, v6.4