A free app for measuring sound pressure levels. This is a very useful application for people who need to find out what's wrong with the audio system, what it sounds like, and how loud it is.

If you have an Android phone, you can use this app to get an idea of what's going on with the sound system in your phone. It can also help you find out how loud it is. This is very useful for both individuals and families.

It is a very simple tool, and all you need to do is to open the app, turn the sound meter up to the maximum, and then you will be able to see the value in decibels (dB).