![Free Sound Level Meter App from CDC's National Institute for Occupational Safety and Health | Noisy Planet Free Sound Level Meter App from CDC's National Institute for Occupational Safety and Health | Noisy Planet](https://www.noisyplanet.nidcd.nih.gov/sites/noisyplanet/files/cell-phone-cropped.jpg)
Free Sound Level Meter App from CDC's National Institute for Occupational Safety and Health | Noisy Planet
NIOSH National Institute for Occupational Safety and Health - The NIOSH Sound Level Meter App has been updated! It now works on the latest iPhone models. Download it today and always know
![NOISE LEVEL: How to check the noise level around your environment using an Apple iPhone, iPad, and Watch NOISE LEVEL: How to check the noise level around your environment using an Apple iPhone, iPad, and Watch](https://static.toiimg.com/photo/msid-96109871,width-800,resizemode-4,imgsize-27490/96109871.jpg)