noise app accuracy

Hello Tripptastic,

We see that you have some concerns regarding the accuracy of the Noise app on your Apple Watch. As noted on the below article, the app uses the watch's microphone to detect. So be sure that there are no cases or screen protectors covering the mic.

Measure noise levels with Apple Watch - Apple Support

Thanks for using Apple Support Communities!

The only way to tell if it's accurate would be to take readings with another decibel meter that you know is accurate at the same time. Note that just because the watch doesn't agree with another decibel meter doesn't mean it's the watch that's inaccurate. You'd need to have the decibel meter calibrated by a professional.