Sound Level Analyzer9.1 - App Store
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Publisher Description
"Sound Level Analyzer" is the standard sound level measurement app with sound frequency analysis tools.
It is available for a wide variety of applications, such as measuring ambient noise in neighborhoods, testing audio systems, checking interior noise in vehicles, checking sound at live events, and much more.
"Sound Level Analyzer" has additional analysis features, which are time graph, real-time frequency spectrum analyzer (RTA) and FFT analyzer. It can be used to analyze sound source characteristics.
Features:
# Measurement and Analysis functions
Main (Leq): Sound level measurement (real-time display)
- Sound level measurement (dB): Leq (equivalent noise level), Min (minimum value), Max (maximum value), Avg (time average equivalent noise level)
- Frequency weighting correction characteristics: A (for noise level meter), C (for sound level measurement), Z (no correction)
- Time weighting characteristics: Fast = 0.125 sec, Slow = 1.0 sec
Power Spectrum (P.S.): View of frequency spectrum analysis (real time display)
- Spectrum analyzer function: FFT analysis, 1/3-octave band response analysis.
- FFT frequency range settings: 100Hz - 20kHz (FFT all) / 100Hz - 3kHz / 3k - 6kHz
- Measured value display function in 1/3 oct band response analysis. (OctVal)
- Power spectrum display function at the time of occurrence of Max. (Display Max)
# Control functions
- Calibration: level correction value setting, -20 to +20dB
- Measurement timer: 1 minute / 5 minutes / 10 minutes / 15 minutes / 20 minutes / 30 minutes / 1 hours
- Snapshot (Snap): Save measurement display with time stamp to Photos.
Applications:
- Live Sound
- Environmental noise measurement
- Installation of audio equipment
- Tuning of audio equipment
- Architectural acoustics
- Broadcast
- Device management
Example of the noise level situation:
- 130dB: Engine sound of Airplane
- 110dB: Horn of Car
- 100dB: Noise of passing train
- 90dB: In loud factory
- 80dB: In the train, Vacuum cleaner
- 70dB: Noisy office, Noisy Street
- 60dB: Quiet Car, Normal conversation
- 50dB: Quiet office
- 40dB: In the library, Quiet residential area
- 30dB: Outskirts of midnight, Whisper
- 20dB: Sounds of rubbing leaves
Note: The first time the app accesses the built-in microphone and Photos after installation, the iOS system will ask you for permission to access them. If you have not enabled this setting, the application will not be able to access them due to iOS system privacy restrictions. Please enable the access permission in the iOS setting "Settings > Privacy & Security > Photos or Microphone".
Please visit our iOS app support page for more information on this app.
Version History - Improved internal processing and performance. 9.1 Jul 26 - Improved internal processing and performance.
- Requires iOS 26.2 or later. 9.0 Jan 12 - Renewed UI design.
- Requires iOS 18.1 or later. 8.0 12/01/2024 - Improved internal processing and performance.
- Changed the display position of the occurrence time and the maximum level in "Display Max" at P.S. mode.
- Requires iOS 16.6 or later. 7.0 09/30/2023 - Improved internal processing and performance.
- Renewed UI design.
- Requires iOS 15.0 or later. 6.0 10/05/2022 - Replaced a screenshot on the AppStore. 5.0.1 11/06/2021 - Minor improvements.
- Requires iOS15.0 or later. 5.0 11/03/2021 - Minor improvements.
- Requires iOS12.5 or later. 4.2 02/17/2021 - Minor improvements. 4.1 11/04/2020 - Partially changed the FFT frequency display range to match the frequency with high audibility.
- Added processing to prevent erroneous operation during measurement.
- Minor improvement.
- Requires iOS12.4 or later. 4.0 05/18/2020 - Add the measured value display function in 1/3 oct band response analysis.
- Minor improvement.
- Requires iOS12.2 or later. 3.1 04/02/2019 - Changed UI.
- Minor bug fixes and minor improvements.
- Requires iOS12.1 or later. 3.0 11/13/2018 "Sound Level Analyzer" has received the best rating as sound level measurement app in the research paper of the academic journal "Applied Acoustics". (Paper: ”Testing the accuracy of smartphones and sound level meter applications for measuring environmental noise”, Enda Murphy, Eoin A. King ; Applied Acoustics 106(2016)16-22.)
- Minor bug fixed.
- Performance Improvement.
- Requires iOS10.3 or later. 2.3 05/17/2017 - Optimized the code.
- Changed the screen design.
- Requires iOS10.2 or later. 2.2 03/24/2017 Achieved over 100,000 downloads, "Sound Level Analyzer / Lite", #1 sound level meter app for iPhone !
- Changed the screen design.
- Requires iOS9.2 or later. 2.1 03/05/2016 - Add the display function of the long-term average equivalent noise level.
- Code optimization. 2.0 12/12/2015 - Support for the background operation.
- Code optimization. 1.3 05/28/2015 - Supported iOS8.
- Code optimization.
- Changed screen design. 1.2 03/25/2015 - Slight adjustment of the reference level.
If you enjoy using the app, please take a minute to leave a positive review. This really helps and keeps us motivating to work on new updates ! 1.1 09/03/2014 1.0 06/09/2014
About Sound Level Analyzer
The company that develops Sound Level Analyzer is TOON,LLC. The latest version released by its developer is 9.1.
To install Sound Level Analyzer on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-15 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the Sound Level Analyzer as malware if the download link is broken.
How to install Sound Level Analyzer on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the Sound Level Analyzer is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After Sound Level Analyzer is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 9.1
posted on 2026-10-15
Version History - Improved internal processing and performance. 9.1 Jul 26 - Improved internal processing and performance.
- Requires iOS 26.2 or later. 9.0 Jan 12 - Renewed UI design.
- Requires iOS 18.1 or later. 8.0 12/01/2024 - Improved internal processing and performance.
- Changed the display position of the occurrence time and the maximum level in "Display Max" at P.S. mode.
- Requires iOS 16.6 or later. 7.0 09/30/2023 - Improved internal processing and performance.
- Renewed UI design.
- Requires iOS 15.0 or later. 6.0 10/05/2022 - Replaced a screenshot on the AppStore. 5.0.1 11/06/2021 - Minor improvements.
- Requires iOS15.0 or later. 5.0 11/03/2021 - Minor improvements.
- Requires iOS12.5 or later. 4.2 02/17/2021 - Minor improvements. 4.1 11/04/2020 - Partially changed the FFT frequency display range to match the frequency with high audibility.
- Added processing to prevent erroneous operation during measurement.
- Minor improvement.
- Requires iOS12.4 or later. 4.0 05/18/2020 - Add the measured value display function in 1/3 oct band response analysis.
- Minor improvement.
- Requires iOS12.2 or later. 3.1 04/02/2019 - Changed UI.
- Minor bug fixes and minor improvements.
- Requires iOS12.1 or later. 3.0 11/13/2018 "Sound Level Analyzer" has received the best rating as sound level measurement app in the research paper of the academic journal "Applied Acoustics". (Paper: ”Testing the accuracy of smartphones and sound level meter applications for measuring environmental noise”, Enda Murphy, Eoin A. King ; Applied Acoustics 106(2016)16-22.)
- Minor bug fixed.
- Performance Improvement.
- Requires iOS10.3 or later. 2.3 05/17/2017 - Optimized the code.
- Changed the screen design.
- Requires iOS10.2 or later. 2.2 03/24/2017 Achieved over 100,000 downloads, "Sound Level Analyzer / Lite", #1 sound level meter app for iPhone !
- Changed the screen design.
- Requires iOS9.2 or later. 2.1 03/05/2016 - Add the display function of the long-term average equivalent noise level.
- Code optimization. 2.0 12/12/2015 - Support for the background operation.
- Code optimization. 1.3 05/28/2015 - Supported iOS8.
- Code optimization.
- Changed screen design. 1.2 03/25/2015 - Slight adjustment of the reference level.
If you enjoy using the app, please take a minute to leave a positive review. This really helps and keeps us motivating to work on new updates ! 1.1 09/03/2014 1.0 06/09/2014
version 9.0
posted on 2026-07-23
Version History - Improved internal processing and performance.
- Requires iOS 26.2 or later. 9.0 Jan 12 - Renewed UI design.
- Requires iOS 18.1 or later. 8.0 12/01/2024 - Improved internal processing and performance.
- Changed the display position of the occurrence time and the maximum level in "Display Max" at P.S. mode.
- Requires iOS 16.6 or later. 7.0 09/30/2023 - Improved internal processing and performance.
- Renewed UI design.
- Requires iOS 15.0 or later. 6.0 10/05/2022 - Replaced a screenshot on the AppStore. 5.0.1 11/06/2021 - Minor improvements.
- Requires iOS15.0 or later. 5.0 11/03/2021 - Minor improvements.
- Requires iOS12.5 or later. 4.2 02/17/2021 - Minor improvements. 4.1 11/04/2020 - Partially changed the FFT frequency display range to match the frequency with high audibility.
- Added processing to prevent erroneous operation during measurement.
- Minor improvement.
- Requires iOS12.4 or later. 4.0 05/18/2020 - Add the measured value display function in 1/3 oct band response analysis.
- Minor improvement.
- Requires iOS12.2 or later. 3.1 04/02/2019 - Changed UI.
- Minor bug fixes and minor improvements.
- Requires iOS12.1 or later. 3.0 11/13/2018 "Sound Level Analyzer" has received the best rating as sound level measurement app in the research paper of the academic journal "Applied Acoustics". (Paper: ”Testing the accuracy of smartphones and sound level meter applications for measuring environmental noise”, Enda Murphy, Eoin A. King ; Applied Acoustics 106(2016)16-22.)
- Minor bug fixed.
- Performance Improvement.
- Requires iOS10.3 or later. 2.3 05/17/2017 - Optimized the code.
- Changed the screen design.
- Requires iOS10.2 or later. 2.2 03/24/2017 Achieved over 100,000 downloads, "Sound Level Analyzer / Lite", #1 sound level meter app for iPhone !
- Changed the screen design.
- Requires iOS9.2 or later. 2.1 03/05/2016 - Add the display function of the long-term average equivalent noise level.
- Code optimization. 2.0 12/12/2015 - Support for the background operation.
- Code optimization. 1.3 05/28/2015 - Supported iOS8.
- Code optimization.
- Changed screen design. 1.2 03/25/2015 - Slight adjustment of the reference level.
If you enjoy using the app, please take a minute to leave a positive review. This really helps and keeps us motivating to work on new updates ! 1.1 09/03/2014 1.0 06/09/2014
version 9.0
posted on 2026-01-12
- Improved internal processing and performance.
- Requires iOS 26.2 or later.
version 8.0
posted on 2024-12-01
Dec 1, 2024
Version 8.0
- Renewed UI design.
- Requires iOS 18.1 or later.
version 7.0
posted on 2023-09-30
Sep 30, 2023
Version 7.0
- Improved internal processing and performance.
- Changed the display position of the occurrence time and the maximum level in "Display Max" at P.S. mode.
- Requires iOS 16.6 or later.
version 6.0
posted on 2022-10-05
Oct 5, 2022
Version 6.0
- Improved internal processing and performance.
- Renewed UI design.
- Requires iOS 15.0 or later.
Disclaimer
Official App Store Link
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