4.2
190 reviews
50K+
Downloads
Content rating
PEGI 3
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About this app

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

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.

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/
Updated on
Oct 2, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

4.2
179 reviews
NoobyNoob138
January 27, 2024
It works as advertised. This is an all-around good app, and there's not much more to say. Negative sides: You most likely need to calibrate it to the ambient sound level. Positive sides: It's surprisingly versatile, it can be calibrated, and it does indeed graph sound volumes.
2 people found this review helpful
Did you find this helpful?
Arpa Piemonte
January 30, 2024
Thanks!
Mary White
December 22, 2023
If "Save Lzeq 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.
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Arpa Piemonte
January 8, 2024
Thank you for the suggestion. We can try to include a button to customise the visualisation in the next versions. Remember that the app viewer is very simple and an external programme is better to manage and control the data, especially for long files.
JennPlays93
March 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.
Did you find this helpful?
Arpa Piemonte
March 21, 2024
Thanks for the review. We are sorry that you don't appreciate the fact we declare the necessity of a calibration. The calibration shoud be necessary for any app. If you find an app that not need it, be very careful with the measured levels. Good luck!

What's new

- Added Marker functionality
- Improved save options
- Minibug fixed
- Improvement performace