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 from a lawn mower measured using the NIOSH Sound Level Meter app - PICRYL Public Domain Search Noise level from a lawn mower measured using the NIOSH Sound Level Meter app - PICRYL Public Domain Search](https://cdn2.picryl.com/photo/2018/08/04/noise-level-from-a-lawn-mower-measured-using-the-niosh-sound-level-meter-app-e918f1-640.jpg)
Noise level from a lawn mower measured using the NIOSH Sound Level Meter app - PICRYL Public Domain Search
![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
![The National Institute for Occupational Safety and Health (NIOSH) Sound... | Download Scientific Diagram The National Institute for Occupational Safety and Health (NIOSH) Sound... | Download Scientific Diagram](https://www.researchgate.net/publication/351670156/figure/fig1/AS:1048070859001857@1626890973461/The-National-Institute-for-Occupational-Safety-and-Health-NIOSH-Sound-Level-Meter-app.png)