OpeNoise vs AirQ Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpeNoise
This application measures real-time sound pressure levels, displaying minimum and maximum values. It offers advanced analysis like third octave and FFT, with options to save data, calibrate, and share measurements with a community. Note: it is not intended for professional use.
- Real-time A-weighted sound pressure level measurement
- Minimum and maximum level tracking
- Third octave and FFT analysis
- Data saving in text file
- Calibration functionality
- Measurements displayed on a map
- Community sharing of calibration and measurements
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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
AirQ Mobile
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The purpose of this application is to collect air quality data in real time from the sensors installed in the moving vehicle. This data can then be visualized in the cab as well as viewed back at the base. The application will collect the data from the sensor and GPS coordinates in real time so the pollution plume can be tracked from an incident and evacuation can be advised if necessary. This application will store the data in the local database and display the live data in 3D maps. It will also upload the data to the central database which can then be visualized on the web application anywhere.
Screenshots
Verdict
The clearest difference is update cadence: AirQ Mobile at fortnightly against OpeNoise's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OpeNoise ships an update every 7 months, AirQ Mobile fortnightly. The most recent releases landed on October 13, 2026 and September 8, 2026 respectively.
| Parameter | OpeNoise | AirQ Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) — better | — |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 7 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15 |
| Further details — not scored | ||
| Size | 12 MB | 45 MB |
| Age rating | 4+ | 17+ |
| Developer | Arpa Piemonte | Turnkey Instruments Ltd |
In-app purchases
OpeNoise
No in-app purchases
AirQ Mobile
No in-app purchases









