Comparison

OpeNoise vs Decibel Meter · Sound Analyzer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

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.

Highlights
  • 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
Features
Read full description

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

OpeNoise4 screens
Decibel Meter · Sound Analyzer4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
OpeNoise versus Decibel Meter · Sound Analyzer: the parameters behind the verdict, then further details
ParameterOpeNoiseDecibel Meter · Sound Analyzer
PriceFreeFree
Rating4.0 (4 ratings)4.7 (1.3K ratings) — better
Positive reviews85.7% of reviews — better78.1% of reviews
Number of ratings41.3K — better
Update frequencyEvery 7 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.6
Further details — not scored
Size18 MB39 MB
Age rating4+4+
DeveloperArpa PiemonteAppLiks Sp. z O.O.

Customer experience

OpeNoise

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

Decibel Meter · Sound Analyzer

All ratings1,305 ratings
Positive93.0%
Neutral4.5%
Negative2.5%
Written reviews32 reviews
Positive78.1%
Neutral0.0%
Negative21.9%

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

None

OpeNoise

No in-app purchases

8 purchases

Decibel Meter · Sound Analyzer

Subscriptions8
  • Weekly Access$1.997 Days
  • Weekly pro access$3.997 Days
  • Sound Level Meter (dB) PRO3 Days trial$3.997 Days
Show 5 more
  • 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?
OpeNoise is free to download, with no in-app purchases.
Is Decibel Meter · Sound Analyzer free?
Decibel Meter · Sound Analyzer is free to download, with in-app purchases available.
Which has better reviews, OpeNoise or Decibel Meter · Sound Analyzer?
Decibel Meter · Sound Analyzer is rated higher. OpeNoise averages 4.0 out of 5 from 4 ratings, while Decibel Meter · Sound Analyzer averages 4.7 from 1.3K ratings.
Do OpeNoise or Decibel Meter · Sound Analyzer have ads?
Neither OpeNoise nor Decibel Meter · Sound Analyzer shows ads.
Which is updated more often, OpeNoise or Decibel Meter · Sound Analyzer?
OpeNoise ships an update every 7 months, and Decibel Meter · Sound Analyzer every 2 months. Most recently, OpeNoise was updated on September 21, 2026 and Decibel Meter · Sound Analyzer on September 20, 2026.

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