OpeNoise Meter 3.3.0
OpeNoise is a real-time noise level meter for Android and iOS smartphone and tablet
Technical contact Openoise
Development status: stable
Project's website →
Source code →
Software functionality
Real-time A-weighted sound pressure level measurement
Minimum and maximum level
Third octave and FFT analysis
Data saving in text file
Calibration
Displaying measurements on a map
Metadata compilation
Sharing calibration and measurements with the OpeNoise community
Comune di Torino
Arpa Piemonte
detailed information
OpeNoise Meter 3.3.0
Last release 2026-01-07 (3.3.0)
Type of maintenance internal
Stato publiccode.yml
License GPL-3.0-or-later
Platforms
android
ios
Enabling platforms None
Compliance None
List of dependencies None
Supported languages
Italian
English
Extended description
OpeNoise is an app aimed at the measurement of real-time sound pressure level.
TERM OF USE This app is not intended for professional use, it does not necessarily guarantee an accurate noise measurement.
Since each device has a different response to noise, a comparison with a professional noise level meter in the measurement dynamic range is required.
The utilization of the app requires adequate technical knowledge and skill; an extemporary measurement might not be correct.
For more information, please refer to the device calibration and dynamic range specifications in the Tutorial section.
The calibrations and measurements sent to the OpeNoise community will be used for statistical purposes only and cannot be used in any way to verify compliance with legal limits.