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Screenshots

  • OpeNoise screenshot 1
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  • OpeNoise screenshot 3
  • OpeNoise screenshot 4

About OpeNoise

OpeNoise is a real-time noise level meter. TECHNICAL SPECIFICATIONS: - 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 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. 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. CREDITS Developers: Arpa Piemonte (Regional Agency for the Protection of the Environment of Piedmont - Italy - www.arpa.piemonte.it). The code is open source under GNU v.2 license or later, the code is on GitHub: https://github.com/Arpapiemonte/ KEYWORDS noise level meter, level, sound, noise, measure, measurement, dB, db, dBA, dB(A), decibel

What’s new

Version 3.4.1 · Updated October 8, 2026

Performance improvement and minibug resolution

App privacy

The developer, Arpa Piemonte, reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

Alternatives to OpeNoise

Looking for apps like OpeNoise? Here are 6 similar apps on the App Store. The highest rated is Audio Analyst (5.0/5), and all 6 are free to download.

OpeNoise vs. alternatives
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OpeNoise 4.0 / 5 (4 ratings) Free October 8, 2026
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