Noise Meter is a free Android app developed by Global Utility App Maker that helps you measure the environmental noise. It is a simple and easy-to-use app that displays decibel values in various forms. You can experience a tidy graphic design with a high frame rate by using this smart sound meter app.

The app displays the current noise reference, min/max decibel values, decibel by graph line, and elapsed time of decibel. However, it is important to note that the microphones in most Android devices are aligned to human voice, and the maximum values are limited by the device. So, very loud sounds (over ~90 dB) may not be recognized in most devices. Therefore, it is recommended to use it as just an auxiliary tool. For more accurate dB values, an actual sound level meter is recommended.