Way wrong- too low – sound meter (decibel meter) Review

I just had this and several other app decibel meters measuring noise at a construction site by my house. We had them side by side with two different state (FL) 'certified' meters. These two were withib 2 dB of each other. This app on the other hand was off (always below) 24-45 dB at all sites we tested. With such an error this meter is completely useless. It is not useful at all. You can pick any number you want between 50 and 92 and have a better chance of hitting the correct dB level than this app. Very disappointing.
Review by Rogsav on sound meter (decibel meter).