Max? Peak? Average?

Other than the fact that there is no definition of the terms used (peak, max) or explanation of how they weight the acoustic spectrum as sensed by the iPhone microphone in calculating a sound pressure level, I find it to be an easy to use app for comparing different ambient environments. The accuracy seems to be good and the repeatability excellent. The UI is fairly obvious. I am not sure how they achieve the apparent dynamic range when they are stuck with the limitations of the iPhone sensor.

Doc.Dough about dB Decibel Meter PRO