Measure and record sound level using your phone or tablet. This is a free app without any ads. Sound Meter and Recorder is an application for measuring the sound level using the microphone of your phone or tablet. The application supports the short duration recording of measured values and saving these values to a csv file. The application is able to automatically calibrate measurements, or you can manually set the reference level for best results. Before using the app, it is recommended to put your phone or tablet in as quiet as possible environment for at least 10 seconds to calibrate the measurements.