SoundMeter: Noise & Safe Time

SoundMeter uses your phone's microphone to measure environmental noise. It shows the current sound level, cumulative exposure, and the estimated time remaining before you reach the selected exposure guide. Key features • Real-time dBA, LAeq, minimum, and maximum levels • Everyday WHO guidance and a NIOSH work-safety reference • Confidence indicators based on measurement conditions • Daily history and weekly exposure reports • Calibration with a reference sound level meter • Optional on-device recording with timeline playback • Light and dark themes, large text, and vibration alerts Your privacy Measurements and recordings stay on your device and are not uploaded to a server. You can delete recordings individually or all at once. To serve ads, the Google Mobile Ads SDK may process approximate location derived from an IP address, app interactions, app performance information, and device identifiers. See the privacy policy for details. Important Phone microphones vary by device. SoundMeter readings are estimates for general reference. Legal evidence, medical diagnosis, workplace compliance decisions, and certified testing require calibrated professional equipment.