Sound Meter Decibel is a free program for Android mobile devices and tablets. It is very useful, has a cozy interface, and is very simple to use.

There are a lot of functions this app has to offer, such as division gage, chart graph, bar graph, calibration decibel, change color according to your preference, refresh, play, pause, keeping screen power on, and also display the minimum and maximum average decibel, and measure time. You can try this out on your mobile phone's ringtone.

The developers, melon soft, wanted users to experience the best when using this app so they made this app user-friendly.