Features of Decibel Meter & Sound Level Meter - Evaluate current noise reference - Evaluate avg/max decibel values (dB) - Display decibel in gauge & graph - Measure sound level with record - Display avg/min/max decibel values of records - 4 themes for your choice - Calibrate if you feel not accurate enough - Regulate voices visually - Set decibel warning for timely hearing protection Uses of Decibel Meter & Sound Level Meter - When you feel too noisy but without proof - Monitor sound level around us - Detect the decibel of your neighbors - Record your snores Levels of Noise in decibels (dB) according to the American Academy of audiology, from 20 dB to 120 dB between the division. Note: The max values are limited by your ios device, very loud noises may not be recognized accurately. This sound meter app is a necessary noise detector app for both individuals and families, it helps you stay away from noise pollution and concentrate. Just need one step to turn your phone into a sound meter tool to measure environmental noise, download this free Sound Meter app!