OpeNoise vs Decibel Meter · Sound Analyzer
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
Decibel Meter · Sound Analyzer
Measure ambient noise levels and sound exposure duration in real-time. This app displays acoustic intensity in decibels with detailed visual reports and supports photo/video overlays with noise data. Protect your health from noise pollution.
- Real-time decibel meter
- MIN, AVG, MAX sound level display
- Noise dosimeter (NIOSH/OSHA compliant)
- Photo and video with noise overlay
- Record measurement results
- Data saving feature
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Decibel Meter is an app that will help you measure the ambient noise level in real time and the duration of sound exposure of various intensities over a user-defined period of time. The application calculates acoustic intensity in decibels and displays a detailed visual report on the screen of your digital device. For the Decibel Meter to work correctly and detect the noise level, you need to allow access to your device’s microphone. Audio data read by the microphone is displayed in decibels (dB) in a user-friendly style. KEY FEATURES: • Real-time decibel (dB) meter; • Minimum (MIN), average (AVG), maximum (MAX) sound level display; • Fully functional noise dosimeter compliant with NIOSH and OSHA standards; • Photo and video with noise overlay; • Option to stop and record measurement results at any time; • Data saving feature. The app will help you avoid noise pollution and will protect both your health and the health of your family! Please choose from our standard subscription options below: 1-week subscription at $3.99; 1-month subscription at $6.99; 12-month subscription at $9.99. Privacy Policy: https://appliks.com/privacy-policy Terms of Use: https://appliks.com/terms-of-use
Screenshots
Verdict
The clearest difference is rating: Decibel Meter · Sound Analyzer at 4.7 against OpeNoise's 4.0. Decibel Meter · Sound Analyzer also leads on ratings volume (1.3K vs 4) and update cadence (every 2 months vs every 7 months). OpeNoise's advantage is in-app purchases (none vs 8). On price, review sentiment, ads 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. Decibel Meter · Sound Analyzer sells 8 in-app purchases, starting at $1.99 per 7 days. OpeNoise asks for nothing beyond the download.
Decibel Meter · Sound Analyzer holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Decibel Meter · Sound Analyzer has 1.3K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 86% of OpeNoise's written reviews are positive against 78% of Decibel Meter · Sound Analyzer's, so the app with the better star average is not the one people write more warmly about.
OpeNoise ships an update every 7 months, Decibel Meter · Sound Analyzer every 2 months. The most recent releases landed on September 21, 2026 and September 20, 2026 respectively.
| Parameter | OpeNoise | Decibel Meter · Sound Analyzer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) | 4.7 (1.3K ratings) — better |
| Positive reviews | 85.7% of reviews — better | 78.1% of reviews |
| Number of ratings | 4 | 1.3K — better |
| Update frequency | Every 7 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 18 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Arpa Piemonte | AppLiks Sp. z O.O. |
Customer experience
OpeNoise
Decibel Meter · Sound Analyzer
Bugs and requests
OpeNoise
Not enough reviews yet to summarise bugs or requests.
Decibel Meter · Sound Analyzer
Reported bugs
2 issues- Microphone issues
- Subscription paywall
Requested features
1 request- Make more apps like this one
In-app purchases
OpeNoise
No in-app purchases
Decibel Meter · Sound Analyzer
- Weekly Access$1.997 Days
- Weekly pro access$3.997 Days
- Sound Level Meter (dB) PRO3 Days trial$3.997 Days
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- Monthly pro access$6.991 Month
- Yearly Access$6.991 Year
- Decibel Meter & Dosimeter PRO3 Days trial$6.991 Month
- Sound Meter & Dosimeter PRO3 Days trial$12.991 Year
- Yearly pro access$12.991 Year
Questions
Is OpeNoise free?
Is Decibel Meter · Sound Analyzer free?
Which has better reviews, OpeNoise or Decibel Meter · Sound Analyzer?
Do OpeNoise or Decibel Meter · Sound Analyzer have ads?
Which is updated more often, OpeNoise or Decibel Meter · Sound Analyzer?
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