Noise Meter
A real-time sound level measurement app for Android. Measure noise in decibels instantly.
About
Noise Meter is an Android app that uses your device's microphone to measure ambient sound levels in real time. It displays the current noise level in decibels (dB), classifies the environment into four categories, and keeps a log of your measurements with statistics. An analog meter display provides a clear visual indicator of the sound level around you. Audio is processed entirely on-device — nothing is ever recorded or transmitted.
Features
- Real-time sound level measurement via the device microphone (dB)
- Automatic microphone-sensitivity calibration on supported devices for more accurate readings
- Noise classification into four levels: quiet, normal, loud, and dangerous
- Measurement history with max/average dB and a dB timeline
- Analog meter display for intuitive visual feedback
- Manual calibration against a known reference level
- Share measurement results as an image
- Optional one-time in-app purchase to remove ads