Golden, I used the free trial “db” meter that turns into an expensive $15+ / mo after the trial. Dumped it after the trial. A few years ago I purchased a dB meter “sound pressure level meter” from radio shack and it is not very expensive and costs nothing per month😊. It measured within a couple of dB with the apps I have used. The app I initially used went out of date with the phone upgrades and now cost way to much money to make it worth keeping it on the phone, but free trial seems ok.
2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)