Consistent but over-sensitive – Decibel - Accurate dB Meter Review

The calibration is off on the over-sensitive side. My talking quietly...just loud enough to activate Siri with a (sturdy install, not wobbly) ceiling fan in the background and the iPhone about 12-14 inches away from my face...registered at 75-80 dB. The good news is it's consistent, just need to be able to calibrate. My 2-star rating would easily be 4-5 stars if there was a way to calibrate or establish a relative baseline.
Review by 9tailfae on Decibel - Accurate dB Meter.