# NoiSee — Professional sound level meter

> Professional-grade sound level meter and occupational noise measurement tool for iPhone. (iPhone/iPad app by EA LAB.)

- Source: https://appshunter.io/ios/app/noisee/id549239949 (this page in markdown: same URL + `.md`)
- Developer: [EA LAB](https://appshunter.io/developer/1005558529)
- Category: Utilities, Music
- Price: $0.99 with in-app purchases
- Rating: 4.50/5 from 242 App Store ratings · 15 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: American English
- Released: 2012-08-09
- Data updated: 2026-09-06
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/noisee/id549239949/reviews.md

## What is NoiSee?

Measuring sound is what we do. NoiSee — Worthy of the name "Sound Level Meter"

NoiSee is an intuitive professional-grade sound level meter for iPhone and iPad. It features all the tools expected from a professional ANSI or IEC compliant Sound Level Meter. All filters, averaging modes and statistics meet or exceed class 2 requirements of the relevant ANSI and IEC standards. NoiSee is specifically designed for Occupational Health and live-sound measurements. It was created by a team with over 20 years of experience in calibration, owning a Sound Level Meter calibration laboratory meeting ISO 17025 requirements. The same calibration equipment was used to develop this app.

IMPORTANT NOTE

Supported devices with a calibrated and frequency-response-compensated internal microphone:
iPhone 12 mini, 12, 12 Pro Max, 13, 15, 16 Plus, 16e, 17 Pro Max, iPhone Air; iPad (9th gen), iPad (10th gen).

The app also includes parameters and UI optimised for live events and live audio monitoring, including running LAeq (5, 10, 15 and 20 min averaging intervals).

The initial calibration is determined by testing in an anechoic chamber meant for calibration of professional Sound Level Meters. We do not recommend changing it on supported devices, as internal microphone sensitivity varies insignificantly between units of the same model. 

Requires iOS 17 or later. Dynamic range approximately 40–100 dB (re. 20 µPa); frequency range 40 Hz – 18 kHz.

SOUND LEVEL METER

History (profile) view of all relevant parameters. Statistics view of the current measurement (ISO 1996 percentiles), also visualised as a histogram.
• Time weightings: Fast, Slow, Impulse, Equivalent 
• Parameters: LAeq, LCpeak, LAFmin, LASmax, SPL, and more
• Spectrum view: time-history of frequency- and time-weighted level. CPB analysis per IEC 61260 and ANSI S1.11, from 1/1 down to 1/24 octave.

NOISE AT WORK

Occupational-health compliant (ISO 9612, OSHA, NIOSH): Noise DOSE, elapsed time, LEX 8h, Projected DOSE, Time to reach 100% DOSE. Threshold, reference level and exchange rate can be set to custom values.

EXTERNAL MICROPHONES

Tested with MicW i436, i437 and D236, and Dayton Audio iMM-6 and iMM-6C — calibrated measurement microphones complying with Class 2 (IEC 61672). With an acoustic calibrator, NoiSee can calibrate automatically. Connect via USB-C, or via the Apple USB-C / Lightning to 3.5 mm adapter.

IN-APP PURCHASES

Premium octave analysis:
• Non-standard time weightings (1/16 s up to 16 s)
• Spectrum in 1/3 octave or finer
Logging:
• One-second logging of spectrum and total parameters
• Profile view beyond 2 minutes
• CSV export
Recording:
• 24-bit WAV or AAC
Reporting:
• PDF report export

## Key features

- Professional-grade sound level meter
- Occupational health compliant parameters
- Noise DOSE and Elapsed time
- Frequency and time weighting options
- Spectrum analysis
- Calibration features

## Pricing and in-app purchases

Base price: $0.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Logging | $1.99 | one-time |
| Audio recording | $1.99 | one-time |
| Premium octave analysis | $2.99 | one-time |
| Reporting | $1.99 | one-time |


## Chart rankings

- #120 in Top Paid · Utilities (US App Store)

## Recent user reviews (10 of 15)

All indexed reviews: https://appshunter.io/ios/app/noisee/id549239949/reviews.md

### 5/5 — Calibrate

*2025-08-13, version 2.4.1*

As title suggests, so long as you can calibrate the mic you’re using against a Class 1 SLM, in my opinion this seems to be the best “SLM App” available and as such, a good indicator of time weighted (LAeq) & 3rd Octave numbers = 👏🏻💯🙏🏻

### 5/5 — Gets the Job Done

*2025-07-18, version 2.4.1*

For what I was needing this sound meter app got the job done.  This app renders a lot of data that I did not quite understand but that is ok.  As another reviewer stated, this app will fail upon startup at times but that is easily overcome.  5 stars!

### 3/5 — Good, could be better

*2024-05-17, version 2.2.0*

I’m no expert. I like the graphics, I plan to use it in restaurants. I can report the cicada background here is 50+ db
I’d appreciate explanations of the terminology or a link for it. 
If you need to reset just turn it off and on, which seems unobjectionable for such a cheap app.

### 5/5 — Useful with scope for improvement

*2023-08-06*

Would be nice to have integration with Shortcuts and ability to save data to Apple health. I can then automate sampling based on events and time.

### 5/5 — Exactly what I wanted

*2021-12-25, version 2.2.0*

It’s doing the simple things I wanted and I am learning more and more about sound environments and the more sophisticated details I should be examining.

### 5/5 — Hangs

*2021-05-21, version 2.2.0*

Seems like a nice sound level app. It hangs and locks up when opening. Only way to get it to run is to reboot it by swiping it closed and restarting it. It works fine till I close it and try and run it again at which time it is locked up

### 1/5 — Great when it was supported

*2021-01-29, version 2.1.2*

No longer works on iOS 14, and an update doesn’t seem likely

### 2/5 — There are better for less

*2020-08-05, version 2.1.2*

I am a regular user of the NIOSH sound level meter developed by this company. Today I found the NOiSee dB meter and from the description, it sounded like it fit what I was looking for- mostly over the NIOSH app is the ability to see graphed results. First the good- the best part about this app is the time to 100% dose. Helpful for workplace sound surveys. The bad- for US/ OSHA, there are too many unnecessary features. The resolution in the graphs are way too big. 10 seconds? Won’t show echos or secondary pulses. The biggest negative is you can’t save or send a survey. That costs extra, not explained in the description. $0.99 won’t break the bank but the NIOSH dB meter has better functionality for free, however it does only measure to OSHA or NIOSH standards. I did use a QC-10 calibrator with a Dayton Audio iMM-6 external mic and had to correct -8.5. With the external mic after calibration, the readings are 2dB higher than my 3M Edge 4 dosimeter.

### 1/5 — PDF Reports don’t seem to work

*2020-05-16*

I just purchased the reporting function, doesn’t appear to work...!

### 5/5 — Amazing!

*2020-03-01, version 2.1.2*

Thought for sure I’d have had to buy an expensive meter to do what this app can do!

## Frequently asked questions about NoiSee

### What does NoiSee do?

NoiSee is a professional-grade sound level meter application for iPhone and iPod touch. It measures sound levels and provides tools for occupational health measurements, including noise dose and projected dose calculations. The app is designed to meet or exceed class 2 requirements of relevant ANSI and IEC standards.

### What are the key features of NoiSee?

Key features include a Sound Level Meter mode with history view, statistics, and time weightings (Fast and Slow), measuring parameters like Leq, LCpeak, and SPL. It also offers a Spectrum view for frequency and time-weighted sound levels. The Noise at Work mode provides occupational health compliant parameters like Noise DOSE, Elapsed time, LEX 8h, and Projected DOSE.

### Is NoiSee free to use?

The application is available for free download, but it operates on a freemium model. Users can start measuring immediately with the internal microphone, and additional features or advanced functionalities may be unlocked through in-app purchases.

### What devices is NoiSee compatible with?

NoiSee has been developed to run on devices running iOS 10 or higher. The app has been tested on different iPhone models, taking into account microphone differences, to ensure accurate readings. It can utilize the internal microphone or compatible external microphones.

### How accurate are the sound level readings?

The app's readings are designed to be highly accurate, leveraging the device's internal microphone and accounting for generational differences. Initial calibration is performed using professional-grade equipment in an anechoic chamber. The app makes full use of the iPhone's dynamic range (approximately 45 dB to 100 dB) and frequency response range (100 Hz to 8 kHz).

## Version history (last 5 releases)

### 3.1.0 — 2026-07-18

- Up to 3.5x lower CPU usage
- Improved oscilloscope
- Configurable spectrum display modes
- Improved fullscreen mode

### 3.0.0 — 2026-06-24

Completely rebuilt, with logging, recording, octave analysis up to 1/24, statistics, and PDF reports.

### 2.4.1 — 2025-06-20

Lots of small fixes and improvements

### 2.2.0 — 2021-03-31

Support for new devices.

### 2.1.2 — 2019-01-22

In this version we have fixed the layout in calibration screen on iPhone 5/5S/SE.

## Apps similar to NoiSee

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Decibel X:dB Sound Level Meter](https://appshunter.io/ios/app/decibel-xdb-sound-level-meter/id448155923) | 4.6 (161,260) | Free | Utilities |
| [Shush - Sound & Noise meter](https://appshunter.io/ios/app/shush-sound-and-noise-meter/id1481271537) | 4.2 (323) | Free | Utilities |
| [Decibel X PRO: dBA Noise Meter](https://appshunter.io/ios/app/decibel-x-pro-dba-noise-meter/id1257651611) | 4.7 (6,897) | $69.99 | Utilities |
| [Decibel : dB sound level meter](https://appshunter.io/ios/app/decibel-db-sound-level-meter/id1227650795) | 4.6 (36,118) | Free | Utilities |
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| [Noise Guru: Decibel Meter](https://appshunter.io/ios/app/noise-guru-decibel-meter/id6444836813) | 4.6 (299) | Free | Utilities |

## More apps by EA LAB

- [Race Patrol](https://appshunter.io/ios/app/race-patrol/id1090326396)
- [NIOSH Sound Level Meter](https://appshunter.io/ios/app/niosh-sound-level-meter/id1096545820)

All apps by EA LAB: https://appshunter.io/developer/1005558529

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-06.*