What are the best decibel meter apps for iPhone or iPad?

asked by Anonymous
33 contributors
8 solutions
  1. 5



    This app is a sound level meter that will allow you to plug in a microphone to get better results, or you can use the one in your iPhone or iPad. It features a graphic to see the sound's level variation. 




    Margarita Carrasco
    Written on November 21, 2017
    "So I was looking for the best decibel meter apps for IOS so I could measure the sound coming off my speakers and I downloaded logSPL. It works great."
  2. 5

    #2SPLnFFT Noise Meter

    SPLnFFT Noise Meter

    This professional app will allow you to accurately find out the sound level around you. It has different features that will help you understand both the loudness and the tone of the sound, as it also has a frequency meter.



    $3.99- with in-app purchases

    Phillip Sanchez
    Written on November 25, 2017
    "I was browsing random apps for my ipad and found SPLnFFT Noise Meter. It's supposed to measure the sound around you and actually works pretty well when I tested it."
  3. 5

    #3NIOSH Sound Level Meter

    NIOSH Sound Level Meter

    NIOSH Sound Level Meter is a free app for measuring sounds using the built-in microphone which was developed by EA Lab in 2016. It is available in iOS devices such as iPhone, iPad and iPod Touch. 




    Amber Delgado
    Written on July 12, 2018
    "It's a remarkable app for me since I use this in my research as a noise assessment tool. I recommend this because it's really accurate. "


A decibel is a unit of measurement that is being utilized to compare various different things such as sound or electricity. Consequently, the loudness or quietness of a sound is measured in decibels (dB) through a decibel scale. Another important concept to understand is the intensity of a sound. Intensity is defined as the amount of energy carried by a sound wave. Interestingly, notice that car engines produce extreme noise because the sound waves that are generated carry more energy.


Did you know that sound effects in films are called Foley? And the process of creating it is called the “Foley art”, named after the legendary developer of sound effects technique in filmmaking Jack Foley. Surely, film connoisseurs out there are familiar with the terms “Foley studio”, “Foley Sheets,” Foley reels,” and “Foley editor” because they all take part in the reproduction of everyday sound effects that are incorporated within the filmed videos during the post-production stage of filmmaking. 

Before the emergence of digital sound effects that are readily available, filmmakers back then utilized some techniques, some you might find ridiculous, that greatly helped to make movie scenes cinematic. For instance, did you know that lightsaber’s sound in the movie Star Wars was produced by the sound designer Ben Burtt using microphone feedback and buzzing motors? Moreover, the sound of laser blasts was made from hitting an antenna tower wire with a hammer. Over the years, the painstaking process of Foley was alleviated—thanks to digital sound makers.

  1. 5

    #4Decibel X

    Decibel X

    Need to find out how quiet is it in your home? Ever wondered what's the sound level in a concert? Then this app is perfect for you: you will get a real time scale level chart, including a frequency analysis. 



    Free- with in-app purchases

    Luz María Zárate
    Written on July 12, 2018
    "I'm a concert goer and I always wondered how loud it is. Decibel X gave me the results and I'm not surprised by it though. ;) "
  2. 3



    This app will turn your Apple device into a professional sound level meter, providing useful information about the sounds around you. You can even use an external microphone to get even more accurate results.



    $19.99- with in-app purchases

    Consuelo Espinoza
    Written on November 19, 2017
    "I decided to take my young daughter to an outdoor concert this year, and wanted to make sure that we stayed far enough from the stage that I would not be risking damage to her hearing. I used SoundMeter on my iPhone and was able to confidently gauge how far away I needed to be. Thanks!"
  3. 1

    #6SPL Meter

    SPL Meter

    This app is a professional sound level meter, which will allow you to know what's the sound level around you: point your device to the sound source and using its built-in microphone you will know what's the sound level around you.


    Android, iOS


    Kyle Sullivan
    Written on November 24, 2017
    "I use this app all the time in my classroom to show my class where their noise level is and when it's time to be quiet. "
  4. 1

    #7dB Volume Meter

    dB Volume Meter

    dB Volume Meter is an app for measuring audio volumes developed by Amanda Gates in 2013. This SPL app requires an external microphone with the iPod Touch and it is also available in iPhone and iPad. 




    Shirley Wang
    Written on July 12, 2018
    "Pretty simple app. I just hope it is always updated. "
  5. 0

    #8SoundMaster RTA

    SoundMaster RTA

    SoundMaster RTA is an app for sound level measurement. With this app, you can capture audio data from input buffers and get advanced calibration and equalization support. It includes additional capabilities, including background recording capability.




    Marios Chaniotis
    Written on February 8, 2018
    "This app is only available for the iPhone and, as the developer says, is calibrated for each iPhone model. I installed it and I admit that the readings seem accurate. The UI and functionality of the application is very very good."


Best What are the best decibel meter apps for iPhone or iPad
1logSPLApps 5 Paid
2SPLnFFT Noise MeterApps 5 Paid
3NIOSH Sound Level MeterApps 5 Free
4Decibel X Apps 5 Free
5SoundMeterApps 3 Paid
6SPL MeterApps 1 Free
7dB Volume MeterApps 1 Paid
8SoundMaster RTAApps 0 Paid

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