BRUIT smart noise monitor

Noise meter and sound level recorder that runs overnight on its own. Leave your phone where the noise bothers you, tap Start, and go to sleep. Bruit detects noise events automatically, classifies what made them, and records audio proof — all while your screen is off.

CATCHES WHAT WOKE YOU UP

Most recording apps start capturing after you press a button. By then the noise is over. Bruit keeps a rolling audio buffer, so when it detects a noise event, the saved clip includes the seconds before the trigger. You hear what actually happened, not what came after.

KNOWS WHAT IT HEARD

Bruit automatically identifies each sound: music, impacts, barking, voices, vehicles, household noise, and more. Eleven categories, scored by confidence. Other apps just show you a decibel number. Bruit tells you what made it.

ADAPTS TO YOUR ENVIRONMENT

Instead of a fixed decibel threshold that triggers on every door closing or triggers on nothing, Bruit tracks the rolling background level and only flags sounds that stand out above it. Works in a quiet bedroom or a noisy apartment without any tuning.

SPEECH IS SCRAMBLED

Anything you share or export leaves with its speech scrambled first. You can send a clip that proves bass was thumping at 2 AM without passing on a single word anyone said. No other noise app does this.

ACCURATE dB MEASUREMENTS

Sound metering follows the IEC 61672-1 international standard, the same spec used in professional sound level meters. Calibration offset corrects for your specific microphone.

RUNS ALL NIGHT WITHOUT CRASHING

Screen off, phone plugged in. Bruit runs as a foreground service with a wake lock. It does not stop when your phone goes to sleep, and restarts automatically if Android kills it. Other noise apps crash or go silent after a few hours — read their reviews.

YOUR DATA, YOUR PHONE

Everything stays on your device. There is no account and no cloud sync. Export a ZIP with recordings and CSV data whenever you need to share. The export is free, not paywalled. Delete everything with one tap.

FREE, WITH ADS

Bruit is free to use and shows ads. One purchase removes them, switches recording to lossless audio, and stores the full sound breakdown for every event. There is no account and no recurring fee.