United StatesThis 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. - Excellent and timely support from NIOSH hearing experts. - Support for Apple's Health (Hearing) app. * Celestina M, Hrovat J, Kardous CA [2018]. Smartphone-based sound level measurement apps: Evaluation of compliance with international sound level meter standards. Applied Acoustics, 139:119-128. https://doi.org/10.1016/j.apacoust.2018.04.011 More resources (including instructional videos and a user manual), a science blog, FAQ, and information about how to interpret results can be found on the NIOSH SLM website https://www.cdc.gov/niosh/topics/noise/app.html
External mic not working
Love the app, great design and simplicity. But want to use it with my lightning port mic. It shows external mic as a option but when I select that it always jumps back to internal. I uninstalled app, connected external mic, tested it with voice memo and other apps and it works just fine. Then reinstalled NIOSH app gave it permission to access mic but it still won’t use external mic. Have rebooted phone. Still not happening. Iphone8 running 16.7.7
United StatesUser interface not user friendly
The app is easy to start, but saving the reading data is not easy to do and you can loose all the data. Could be fixed by making the record button change to a save button when recording data.
United StatesKeeps going blank
- -:- - keeps popping up. Had to delete the app. Will try to download it again later and see how it works…. Update: Creator contacted me and informed me how to fix the issue. Easy to do. Now, if I have any issues, I know what to do. 5 Stars
United Statesoverall very good and helpful, few small suggestions
very useful, seems accurate, easy to use, two problems/recommendations; when i’m recording a measurement and leave the app, even after pausing it, when i come back to NOISH that measurement is wiped. additionally it would be very helpful to be able to use all the apps on my phone during a measurement especially say, spotify because i am trying to gauge whether i am listening to music at a healthy volume but if i want to do that i have to play the music from my ipad while i measure with my phone which is a hassle.
United StatesTWA, Dose not reported
App will not report dose or TWA; using an iPhone 14 Pro.
United StatesCan the survey data be loaded into the Apple Health app
The data is easy to collect, but I am a retired 85-year-old certified safety, professional, and not familiar with the current definitions above and beyond the basic noise level. I would like to enter this information into my Apple Health app.
United StatesVery good but with one big issue
It takes very accurate sound measurements, but from time to time the app will stop displaying the current db reading and show a blank - -.- reading. I hope this can be fixed in the next update. Otherwise a very useful app.
United States
This version adds support for iPhone 14.
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