Free SPL Meter App - From a US Government Agency

 @onhwy61 absolutely I can discern that....check your phone and review the permissions you give all those corporate apps...
I do....
dumped FB in 2019 for good reasons.
but you make an excellent point. The same government trying to save my hearing put corporate lobbyists in charge at EPA and Interior..dumping coal tailings into streams...
I think with great hearing at 57, I will stick with defending myself.

I own 2 RTA, 3 calibrated mics and 2 stamdalone SPl meters

your milage may vary kind sir

but seriously, few audiophiles on the Gon have any clue how loud they listen...most flunked the Roger Modjeski homework assignment to measure SPL....

also, most cell phones and ipads read 6-10 db low.....at low frequencies 

and while i am alert and awake, i am also able to discern the irony that one app i have on my phone allows me to capture the spl of low flying aircraft in violation of FAA rules, automatically log it and send the complaint.....thousands of people across USA use it...

the FAA aka New Skies, gives not one &$#@,,,, Phoenix was successful in suing them......perhaps we shall prevail also....