Chief Building Official

I downloaded your app on a Fire Alarm inspection because the expensive do meter the professional had wasnt working properly
After checking a dozen or so alarms for sound pressure levels, the installer pulled out another meter
Your app and Their meter matched perfect
Their meter costs about $800.00
Thanks for being there for me
Saved a couple hours work for about a dozen guys

Inspector 699 about Decibel X:dB Sound Level Meter