Comparison

OpeNoise vs AudioMoth

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

AudioMoth

Synchronize the time and location of your AudioMoth device with an acoustic chime. Ensure your device's firmware is compatible by checking its documentation.

Highlights
  • Acoustic chime synchronization
  • Set device time
  • Set device location
  • Firmware compatibility check
Features
Read full description

Set the time and location of your AudioMoth using an acoustic chime. Check the documentation of your AudioMoth firmware to confirm that it supports the use of this app.

Screenshots

OpeNoise4 screens
AudioMoth1 screens

Verdict

The call

The clearest difference is rating: AudioMoth at 5.0 against OpeNoise's 4.0. AudioMoth also leads on review sentiment (100% vs 86%). On price, ratings volume, update cadence and ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

AudioMoth holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews point the same way: 86% of OpeNoise's written reviews are positive against 100% of AudioMoth's.

UpkeepUpdate frequency

OpeNoise ships an update every 7 months, AudioMoth every 11 months. The most recent releases landed on September 21, 2026 and July 5, 2026 respectively.

Scorecard2 real differences · 8 level
OpeNoise versus AudioMoth: the parameters behind the verdict, then further details
ParameterOpeNoiseAudioMoth
PriceFreeFree
Rating4.0 (4 ratings)5.0 (3 ratings) — better
Positive reviews85.7% of reviews100.0% of reviews — better
Number of ratings4 — better3
Update frequencyEvery 7 months — betterEvery 11 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.014.0
Further details — not scored
Size18 MB0 MB
Age rating4+4+
DeveloperArpa PiemonteOpen Conservation Technology LTD

Customer experience

OpeNoise

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

AudioMoth

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

OpeNoise

No in-app purchases

None

AudioMoth

No in-app purchases

Questions

Is OpeNoise free?
OpeNoise is free to download, with no in-app purchases.
Is AudioMoth free?
AudioMoth is free to download, with no in-app purchases.
Which has better reviews, OpeNoise or AudioMoth?
AudioMoth is rated higher. OpeNoise averages 4.0 out of 5 from 4 ratings, while AudioMoth averages 5.0 from 3 ratings.
Do OpeNoise or AudioMoth have ads?
Neither OpeNoise nor AudioMoth shows ads.
Which is updated more often, OpeNoise or AudioMoth?
OpeNoise ships an update every 7 months, and AudioMoth every 11 months. Most recently, OpeNoise was updated on September 21, 2026 and AudioMoth on July 5, 2026.

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