A free app for Android, by WiFi Extender – WiFi Analyzer WiFi Speed Test.

Sound Meter – Sound Test & Decibel Meter is an extremely useful tool that can be used to measure noise levels on the go. It is a simple and easy-to-use application that works on most Android devices. 

The application is designed to provide a quick and accurate measurement of noise levels in different environments. It offers a list of levels that correspond to different volumes of sound. It is a very useful tool for those who are looking to protect their hearing or to find out how much noise is in the environment.

The app is designed to be used with your phone or tablet’s microphone. It provides a sound level in decibels (dB) and also in different volume levels.