OpeNoise

3.3.0

Arpa Piemonte

4.36

263 reviews

50,000+
Downloads

Free

Noise level meter

iOS version

Pros & Cons

Real-time, A-weighted SPL with spectral analysis
Map-based visualization for location-aware monitoring
Open-source under GNU v.2 with transparent development
Free to use with calibration and data sharing

Not intended for professional use; accuracy cannot be guaranteed due to device microphone variability
Requires technical knowledge for proper calibration and interpretation
Data quality depends on hardware and environment and is not a substitute for professional meters

About OpeNoise

OpeNoise is a tools app developed by Arpa Piemonte.

How many times has OpeNoise been downloaded?

OpeNoise has been downloaded 96 thousand times. In the last 30 days, the app was downloaded 1.3 thousand times.

What is the rating of OpeNoise?

OpeNoise is rated 4.36 out of 5 stars, based on 260 ratings.

Is OpeNoise free?

OpeNoise is free to download. The APK download size is 11.03 MB. The latest version available is 3.3.0. The last update was on December 9, 2025.

What are the requirements for OpeNoise?

OpeNoise requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play May 2016.

Description

OpeNoise is a real-time noise level meter.

More data about OpeNoise

Price	Free to download
Total downloads	96 thousand
Recent downloads	1.3 thousand
Rating	4.36 based on 260 ratings
Ranking	Not ranked
Version	3.3.0
APK size	11.0 MB
Number of libraries	4
Designed for Android	5.0+
Suitable for	Everyone
Ads	NO ads

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Alternative downloads for the OpeNoise app

OpeNoise compared with similar apps

Common keywords of similar apps

Openoise Technical Community Code Noise Level Measurement Meter Measurements Real Time Calibration App Professional

Keywords missing from this app

Sound Db Decibel Measure Levels Tool Frequency Device Microphone Display Data Decibels Perfect Spl Values Features Pressure Maximum Recent Current Accurate Environmental Audio Test Graph Monitoring Analyzer Reference Dba Devices History Environment Spectrum Weighting Phone Precise Detector Average Interface Readings

Google Play Rating history and histogram

Rating history

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190

Downloads over time

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OpeNoise has been downloaded 96 thousand times. Over the past 30 days, it averaged 44 downloads per day.

Changelog of OpeNoise

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Developer information for Arpa Piemonte

Arpa Piemonte

openoise@arpa.piemonte.it

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Comments on OpeNoise for Android

★★★★★ R Cha · Feb 5, 2026

Great and complete app! I still to calibrate it, but everything seems working well. Extremely appreciated the privacy respect and the source on git ! Gracie agli sviluppatori, ottimo lavoro :)

★★★★☆ Mary White · Dec 22, 2023

If "Save LEQ 1/3 octaves levels" and "Save Lzmin 1/3 octaves levels" are checked before the start of the test. The recorded data will be very long. When you open the recorded txt file in the app, when a row of data is too long, I think it is best not to enable automatic word wrapping on the narrow screen of the mobile phone.

★★★★★ S M · Oct 1, 2018

Did almost exactly what I needed it to with a clean usable interface. Only complaint is that I can't figure out how to save recorded data. Probably something simple I am missing. Thanks for the great open source app!

★★★★★ Elliott · Mar 29, 2024

This app is brilliant, the best by far! It is the only one I have found that can display dB(A) and not just dB(Z). The wide choice of display options is greatly appreciated. I see a lot of people leaving negative reviews on here complaining about the need for calibration, ALL APPS NEED CALIBRATION if they claim otherwise, they are lying! My only wish is to be able to create custom AEQ times as seeing 3, 5, or 15 min averages is very valuable! If you need a sound level app, this is it. 5 starts!

★★★★★ David Reeves · May 5, 2024

Probably the best noise and ambient sound measuring app I've ever used that didn't cost me $80.

★☆☆☆☆ Stan Senter · Feb 7, 2024

Never opened. Deleted, downloaded, start page, no activity. Deleted.

★☆☆☆☆ Chris Marshall · Mar 14, 2025

Doesn't do anything other than countdown to zero. Crashes after opening often.

★★☆☆☆ JennPlays93 · Mar 20, 2024

In order to calibrate the app you need a professional sound meter. While I love that this app doesn't sell to third parties, this made the app useless for me. I got this app to be able to measure the white noise during my baby's nap times to avoid hearing damage. This just isn't the app I needed for my intended purpose.

Google Play Rankings for OpeNoise

This app is not ranked

Technologies used by OpeNoise

9 permissions · 4 libraries

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