Sound level meter (or SPL) app is shows a decibel values by measure the environmental noise, displays measured dB values in various forms. You can experience tidy graphic design with high frame by this smart sound meter app. Features:- Indicates decibel by gauge- Display the current noise reference- Display min/avg/max decibel values- Display decibel by graph- Can calibrate the decibel for each devices. NotesMicrophones in most android devices are aligned to human voice. The maximum values are limited by the device. Very loud sounds (over ~90 dB) may not be recognized in most device. So please use it as just an auxiliary tools. If you need more accurate dB values, we recommend a actual sound level meter for that. This app allows ads banner on the top screen.