---
title: "NIOSH Sound Level Meter - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "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"
---

# NIOSH Sound Level Meter — United States

![NIOSH Sound Level Meter App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/33/b8/ba/33b8ba9f-eabe-a69e-f19c-e198c91afded/AppIcon-0-0-1x_U007emarketing-0-6-0-85-220.png/400x400bb.png)

**Developer:** [EA LAB](https://apptail.io/developer/ea-lab-NHwb)
**Category:** Utilities
**Rating:** 4.7/5 (16,807 ratings)
**Price:** Free
**Bundle ID:** eu.ea-lab.NIOSH
**Store:** Apple App Store
**Country:** United States
**Version:** 1.5.0 (released 2026-05-12)
**Original Release:** 2017-01-13

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1096545820)
**AppTail Page:** [https://apptail.io/app/niosh-sound-level-meter-ZTi/united-states](https://apptail.io/app/niosh-sound-level-meter-ZTi/united-states)

## NIOSH Sound Level Meter Description
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.
- 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. 

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 

## NIOSH Sound Level Meter Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/74/79/31/74793136-cafa-af8e-d26e-5c9314f82347/pr_source.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/df/c8/8f/dfc88f51-0ca1-c0ab-3f2b-1a481785ffb9/pr_source.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/1c/4c/6c/1c4c6c3b-5f81-e832-c936-e96be54361e6/pr_source.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/09/8d/9f/098d9f34-302e-a156-4f2b-7f1862f6073f/pr_source.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/e0/36/b8/e036b844-62e8-0b9c-e1e8-1405303c89ca/pr_source.png/1242x2688.png)

## NIOSH Sound Level Meter Rating Breakdown in United States
- 5 stars: 13,538 (81%)
- 4 stars: 2,003 (12%)
- 3 stars: 697 (4%)
- 2 stars: 178 (1%)
- 1 stars: 391 (2%)

## NIOSH Sound Level Meter Reviews in United States

### ***** "So good I’m surprised it’s free!"
It’s just nice that there’s an app out there that does what you want without constantly bombarding you with ads and limiting features

Need to check the noise level? Use this app
-- Jimothy-H, 2026-08-17

### ****- "yes"
yes
-- dlwlrmalee, 2026-08-16

### ***** "Helpful"
I started using this at work because I needed a way to document the noise level around my desk. The people making decisions about the workspace aren’t the ones sitting there all day, so having actual decibel readings made it easier to show that the constant noise wasn’t just my perception. I was surprised that I had to prove my desk sits around 65 dB for a basic desk job, but I’m glad I had a free tool available to measure it.

I’ve also used it at home to check noise levels around my dogs so I can be more aware of what they’re being exposed to.

I also appreciated that the app is completely free. There were no ads interrupting me and no in-app purchases getting in the way, which is becoming less common.
-- Cat Elita, 2026-07-04

### ***** "Thank you for creating this app"
It helps me with my science project
-- You learn a lot from this, 2026-05-26

### ***** "Microphone unavailable fixed in 1.5.0(52)"
I have used NIOSH for several years but it recently fails reporting my internal microphone operates at 16000 Hz and 48 kHz is required. My Starkey hearing aids connected via Bluetooth is the culprit. If I turn off Bluetooth, NIOSH works but Starkey Thrive app can’t connect. Thank you NIOSH for this accommodation.
-- HlCunningham, 2026-05-16

### ***** "Shut off bluetooth on Iphone while using with hearing aids."
If bluetooth is on app will will grab hearing aid mics instead of phone mics.
-- mrmikel, 2026-05-13

### ***** "Microphone no longer works (see update below)"
Updated app wants 48kHz mic, my iPhone SE only has 24kHz? Please fix the update
Update, problem seems to be related to using my phone thru my hearing aids. When I turn that off, the microphone works fine.
Update 2, thank you to developer who explained that it’s the hearing aid microphone that is getting used instead of the phone microphone. To use the app, don’t have your phone playing thru your hearing aids.
-- sadSack85, 2026-05-09

### ****- "Stopped working due to Hearing Aids"
If you connect hearing aids , iOS may cause app to not work because of this additional microphone. You will need to disable Bluetooth . Developer is responsive in helping to resolve issues.
-- alchance, 2026-05-08

### *---- "What changed???"
I used this app for years, but now it says the phone’s 
mic runs at 16k. The app says it needs to be 48k and no longer works. Same phone and same app, but it cannot measure. 😒
-- 2020 was stolen, 2026-05-08

### **--- "Loved it until recent update"
No longer works after the most recent update. It says I need a different frequency microphone.  I have never needed an external mic in the past, but I guess I now do.
-- QelDoQ, 2026-05-06

[View all NIOSH Sound Level Meter reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## NIOSH Sound Level Meter Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Free | Finland | Utilities | #132 |
| Top Free | Czechia | Utilities | #194 |
| Top Free | Canada | Utilities | #198 |
| Top Free | Romania | Utilities | #232 |
| Top Free | Australia | Utilities | #235 |
| Top Free | Hong Kong SAR China | Utilities | #244 |
| Top Free | New Zealand | Utilities | #244 |
| Top Free | Switzerland | Utilities | #247 |
| Top Free | Norway | Utilities | #250 |

## NIOSH Sound Level Meter Discovered Keywords
- noise meter
- sound analyzer
- frequency analyzer
- db meter
- sound level meter
- decibel
- db sound level meter
- network
- decibel meter
- spl

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## NIOSH Sound Level Meter Available In
- [United States](https://apptail.io/app/niosh-sound-level-meter-ZTi/united-states)
- [Canada](https://apptail.io/app/niosh-sound-level-meter-ZTi/canada)
- [United Kingdom](https://apptail.io/app/niosh-sound-level-meter-ZTi/united-kingdom)
- [Australia](https://apptail.io/app/niosh-sound-level-meter-ZTi/australia)
- [Spain](https://apptail.io/app/niosh-sound-level-meter-ZTi/spain)
- [Thailand](https://apptail.io/app/niosh-sound-level-meter-ZTi/thailand)
- [Germany](https://apptail.io/app/niosh-sound-level-meter-ZTi/germany)
- [Italy](https://apptail.io/app/niosh-sound-level-meter-ZTi/italy)
- [Netherlands](https://apptail.io/app/niosh-sound-level-meter-ZTi/netherlands)
- [Mexico](https://apptail.io/app/niosh-sound-level-meter-ZTi/mexico)
- [Malaysia](https://apptail.io/app/niosh-sound-level-meter-ZTi/malaysia)
- [India](https://apptail.io/app/niosh-sound-level-meter-ZTi/india)
- [China](https://apptail.io/app/niosh-sound-level-meter-ZTi/china)
- [New Zealand](https://apptail.io/app/niosh-sound-level-meter-ZTi/new-zealand)
- [Colombia](https://apptail.io/app/niosh-sound-level-meter-ZTi/colombia)
- [Brazil](https://apptail.io/app/niosh-sound-level-meter-ZTi/brazil)
- [France](https://apptail.io/app/niosh-sound-level-meter-ZTi/france)
- [Singapore](https://apptail.io/app/niosh-sound-level-meter-ZTi/singapore)
- [Switzerland](https://apptail.io/app/niosh-sound-level-meter-ZTi/switzerland)
- [Belgium](https://apptail.io/app/niosh-sound-level-meter-ZTi/belgium)
- [South Africa](https://apptail.io/app/niosh-sound-level-meter-ZTi/south-africa)
- [South Korea](https://apptail.io/app/niosh-sound-level-meter-ZTi/south-korea)
- [Israel](https://apptail.io/app/niosh-sound-level-meter-ZTi/israel)
- [Norway](https://apptail.io/app/niosh-sound-level-meter-ZTi/norway)
- [Chile](https://apptail.io/app/niosh-sound-level-meter-ZTi/chile)
- [Ireland](https://apptail.io/app/niosh-sound-level-meter-ZTi/ireland)
- [Denmark](https://apptail.io/app/niosh-sound-level-meter-ZTi/denmark)
- [Argentina](https://apptail.io/app/niosh-sound-level-meter-ZTi/argentina)
- [Ecuador](https://apptail.io/app/niosh-sound-level-meter-ZTi/ecuador)
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- [Taiwan](https://apptail.io/app/niosh-sound-level-meter-ZTi/taiwan)
- [Hong Kong SAR China](https://apptail.io/app/niosh-sound-level-meter-ZTi/hong-kong)
- [Vietnam](https://apptail.io/app/niosh-sound-level-meter-ZTi/vietnam)
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- [Türkiye](https://apptail.io/app/niosh-sound-level-meter-ZTi/turkey)
- [Russia](https://apptail.io/app/niosh-sound-level-meter-ZTi/russia)
- [Indonesia](https://apptail.io/app/niosh-sound-level-meter-ZTi/indonesia)
- [Czechia](https://apptail.io/app/niosh-sound-level-meter-ZTi/czechia)
- [Philippines](https://apptail.io/app/niosh-sound-level-meter-ZTi/philippines)
- [Finland](https://apptail.io/app/niosh-sound-level-meter-ZTi/finland)
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- [Brunei](https://apptail.io/app/niosh-sound-level-meter-ZTi/brunei)
- [Namibia](https://apptail.io/app/niosh-sound-level-meter-ZTi/namibia)
- [Algeria](https://apptail.io/app/niosh-sound-level-meter-ZTi/algeria)
- [Botswana](https://apptail.io/app/niosh-sound-level-meter-ZTi/botswana)
- [El Salvador](https://apptail.io/app/niosh-sound-level-meter-ZTi/el-salvador)
- [Tunisia](https://apptail.io/app/niosh-sound-level-meter-ZTi/tunisia)
- [Jamaica](https://apptail.io/app/niosh-sound-level-meter-ZTi/jamaica)
- [Cayman Islands](https://apptail.io/app/niosh-sound-level-meter-ZTi/cayman-islands)
- [Venezuela](https://apptail.io/app/niosh-sound-level-meter-ZTi/venezuela)
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- [Bermuda](https://apptail.io/app/niosh-sound-level-meter-ZTi/bermuda)
- [Armenia](https://apptail.io/app/niosh-sound-level-meter-ZTi/armenia)
- [Macao SAR China](https://apptail.io/app/niosh-sound-level-meter-ZTi/macau)
- [Senegal](https://apptail.io/app/niosh-sound-level-meter-ZTi/senegal)
- [Uzbekistan](https://apptail.io/app/niosh-sound-level-meter-ZTi/uzbekistan)
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- [Azerbaijan](https://apptail.io/app/niosh-sound-level-meter-ZTi/azerbaijan)
- [Angola](https://apptail.io/app/niosh-sound-level-meter-ZTi/angola)
- [Belize](https://apptail.io/app/niosh-sound-level-meter-ZTi/belize)
- [Grenada](https://apptail.io/app/niosh-sound-level-meter-ZTi/grenada)
- [Mali](https://apptail.io/app/niosh-sound-level-meter-ZTi/mali)
- [British Virgin Islands](https://apptail.io/app/niosh-sound-level-meter-ZTi/british-virgin-islands)
- [Madagascar](https://apptail.io/app/niosh-sound-level-meter-ZTi/madagascar)

---

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