Noisecatcher

Noise Meter

Real-time noise level measurement using your device microphone.

⚠

Readings relative to your device — not calibrated SPL.

For accurate readings, calibrate once in a quiet room.

557085INACTIVEdB(A)0120
0 dB
−120+24
Audio Recording

Capture raw audio alongside your measurement. Useful as evidence. Saved directly to your device.

⚠To keep the screen on during measurement: Settings → Display & Brightness → Auto-Lock → Never. Restore after use.
Threshold monitor
dB(A)
min

55 dB(A) = EU END major annoyance threshold · 45 dB(A) = WHO Lnight residential

Audio clip at peak

When a new peak reading is set, a 15-second audio clip is recorded and attached to your session report. Audio is stored locally only — never transmitted. Opt-in only. For ECHR Art. 8 filings, a clip at the moment of exceedance significantly strengthens evidentiary value.

Multi-device session
…

Measure the same noise event from several phones at once. Create a session and share the code with others nearby.

Import & Analyze

Drop audio file or click to browse

Import any audio recording to analyze its acoustic statistics, psychoacoustic profile, and get sound classification.

WHO Reference Thresholds
Safe0–54 dB
Caution55–69 dB
Dangerous70–84 dB
Critical85–119 dB
Extreme120–∞ dB