Sound Meter is a professional sound level meter app that measures the sound pressure levels (SPL) using the microphone of your Android device. The app displays the measured data in decibels (dB) with reference to generally known noise or displays the noise data on an easy-to-read graph for the last 30 seconds of app use. Developed by Tuyet Nguyen, Sound Meter is free to download on Android devices.

Sound Meter is also known as decibel meter (dB meter), noise meter, and SPL meter. The app is calibrated to be accurate within a +-2.5 dB range of actual noise level, making it one of the most accurate sound meters on Google Play. The app has been adjusted with the use of a professional sound meter used by sound engineers and made required adjustments for many Android devices, including the most popular devices on the market today.

It is important to note that the microphones in Android devices are made to record human voice, so very loud sounds cannot be recognized (in most cases above 100dB). Sound Meter is a useful tool for measuring noise levels in your environment and can be used for various purposes such as measuring noise pollution, verifying compliance with workplace noise regulations, or monitoring sound levels during concerts or events.