OpeNoise

3.3.0

Arpa Piemonte

4.36

271 reviews

50,000+
Downloads

Free

Noise level meter

4.36 · 271 reviews · 50,000+ downloads

iOS version

OpeNoise delivers real-time, A-weighted noise level measurement with third-octave and FFT analysis, plus map-based visualization and open-source transparency. Developed by Arpa Piemonte and released under GNU v.2, it supports calibration, data export, and community sharing of measurements. With 50,000+ total and 1.5K in the last 30 days, OpeNoise shows sustained adoption in the TOOLS category.

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.

Download Statistics

OpeNoise has been downloaded 99 thousand times. In the last 30 days, the app was downloaded 1.5 thousand times.

User Ratings

OpeNoise is rated 4.36 out of 5 stars. The rating is based on 270 ratings.

App Information

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.

Technical Requirements

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	99 thousand
Recent downloads	1.5 thousand
Rating	4.36 based on 270 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

App Performance Report

Get a detailed PDF report for OpeNoise with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

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 Device Tool Data Microphone Display Frequency Perfect Values Decibels Recent Spl Environmental Pro Features Maximum Reference Pressure Current Test Smart Accurate Analyzer Calibrated Devices Support Tools Audio Dba Detector Max Graph Analysis History Environment Spectrum

Google Play Rating history and histogram

Rating history

Subscribe to see the full rating timeline

200

Downloads over time

Subscribe to see download velocity and history

OpeNoise has been downloaded 99 thousand times. Over the past 30 days, it averaged 49 downloads per day.

Changelog of OpeNoise

Show changelog

Developer information for Arpa Piemonte

Arpa Piemonte

openoise@arpa.piemonte.it

Website

Legal name:

Address:

Phone number:

Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.

I'm the developer of this app

Comments on OpeNoise for Android

★★★★★ David Reeves · May 5, 2024

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

★★★★★ 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!

★★★★★ 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 :)

★★★★★ 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!

★★☆☆☆ 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.

★☆☆☆☆ 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.

Google Play Rankings for OpeNoise

This app is not ranked

Technologies used by OpeNoise

9 permissions · 4 libraries

Subscribe to see full permission and library details

Trust & Safety: The app requests location, network, storage, and microphone permissions to support mapping, data export, and sharing. It states not to replace professional measurements and is open-source (GNU v.2), which enhances transparency.

AppBrain is a directory focused on discovering great apps and games. We give statistics, rankings and search options that Google Play and the App Store don't have. All trademarks are owned by their respective owners. AppBrain doesn't offer APKs or binaries, and always lets users install the official version from Google Play or the App Store.

More apps