What's New

- Fix bug not working when open from background
- Fix high CPU usage in background mode.
- Hide ad in InstaDecibel
- Remove ad wheel in pro version.
- Performance improvements and minor bug fixes.

App Description

NEW: InstaDecibel to share your dB report overlaid on your photos via Instagram, Facebook, Twitter and more!

Decibel 10th turns your iPhone, iPad and iPod touch into a professional sound meter, precisely measures the sound pressure level all around you. This extremely useful and beautiful tool will not only be a great tool for many uses but also bring you a lot of fun. Have you wondered how quiet is your room or how loud is a rock concert or sport event? Decibel 10th will help you answer all those right now.

Most importantly, this tool is absolutely FREE and we commit to keep the price. If you satisfy with it, please support us by rating and giving us comments and feedback.


- Display the Average, Peak and Max values with both nice and clear digital and analog layout

- Quick reference text to help you compare with real-life examples

- Plotted history of the Average values

- Record and export the data to email for further analysis

- Tap on Max value to reset it any time

- Adjustable sample rate, ranging from 4Hz to 20Hz

- Calibrate the measurements from -10dB to 10dB

- Enable/disable auto-lock screen

- Start or stop the tool at any time

- Beautiful, clean and intuitive design

- Retinal ready, just more beautiful on retina iPhone and iPad

- Universal binary, download once and it also runs beautifully both on iPad and iPhone


- The built-in microphone is only sensitive from 0 to approximately 100 decibels

- 2nd generation iPod Touch users do not have built-in microphone so in order to use the app, it is required to plug in an external microphone

- Even though we have tried our best to make the app as accurate as possible, this app is intended for entertainment purposes only


Decibel 10th is the 10th tool among many other professional tools in our app "Multi Measures - All in one measuring toolkit"

iPhone Screenshots

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Decibel 10th screenshot 1 Decibel 10th screenshot 2 Decibel 10th screenshot 3 Decibel 10th screenshot 4 Decibel 10th screenshot 5

iPad Screenshots

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Decibel 10th screenshot 6 Decibel 10th screenshot 7 Decibel 10th screenshot 8 Decibel 10th screenshot 9 Decibel 10th screenshot 10

Apple Watch Screenshots

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Decibel 10th screenshot 11

App Changes

  • November 16, 2011 New version 1.0.1
  • February 26, 2012 New version 1.1.0
  • September 07, 2012 New version 3.5.0
  • October 01, 2012 New version 3.6.0
  • October 13, 2012 New version 3.6.1
  • April 15, 2013 New version 3.6.2
  • August 01, 2013 New version 3.7.0
  • October 07, 2013 New version 3.8.1
  • February 21, 2014 New version 3.8.2
  • July 15, 2014 New version 3.8.4
  • July 18, 2014 New version 3.8.5
  • November 15, 2014 New version 4.0.0
  • November 22, 2014 New version 4.0.1
  • December 29, 2014 New version 4.1.0
  • February 16, 2015 New version 4.1.1
  • May 27, 2015 New version 4.1.2
  • September 23, 2015 New version 4.2.0
  • September 24, 2015 New version 4.2.2
  • October 07, 2015 New version 4.2.3

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