Noise App on Apple Watch will work to protect your hearing
The app uses the microphones on Apple Watch to monitor ambient noise and notifies you if the sound pressure is at dangerous levels.

The Watch will also be able to notify you of dangerous volume levels if you’re listening to music on headphones, provided you’re using one of the certified, calibrated headphones that Apple recommends. A full list of compatible headphones will be released closer to the date of the final software release.
The Economic Times Business News App for the Latest News in Business, Sensex, Stock Market Updates & More.