NIOSH Sound Level Meter

NIOSH Sound Level Meter scores 94 out of 100: rating 93, rating count 84, App Store search rank 98, update recency 100. The four parts are averaged with no weights, and S tier follows from that score within this list. The full explanation, as data.

This award-winning app combines the best features of professional sound level meters and noise dosimeters into a simple, easy-to-use package. - Developed by experienced acoustics engineers and hearing loss experts. - Completely FREE - No ads, no limited features, and no in-app purchases. - Tested and validated (accuracy ± 2 dBA) according to standards in a reverberant chamber at NIOSH acoustics lab - the only proper method to validate accuracy. - Trusted source and world-class expertise in noise and hearing research. - Meets Type 2 requirements of IEC 61672:3 SLM standard when used w/ external microphone.* - Provides the most relevant metrics found in professional sound instruments today. Averages such as LAeq and TWA, Max and Peak Levels, Noise Dose and Projected Dose according to NIOSH and OSHA standards, and all three major weighting networks (A, C, and Z). - Capability to calibrate either internal or external microphone. Reporting and Sharing data. - Up-to-date informational screens on what noises are considered hazardous, how to conduct a noise measurement, how to properly select a hearing protector, and guidelines for preventing hearing loss, all at the palm of your hand. -