A taste of the real thing — in the app it reacts to your environment at up to 120 fps.
Built on IEC 61672 weighting filters and a calibrated audio pipeline, with the tools you actually need when noise becomes a problem.
Live sound level with A, C and Z frequency weighting, min/avg/max/peak values and a smooth 120 fps gauge.
See the full 20 Hz–20 kHz picture with a live spectrum, max-hold trace and dominant frequency readout.
OSHA and NIOSH standards, daily dose %, TWA and permissible exposure times — know when it's too loud, for how long.
Every saved measurement keeps its chart, statistics, location and the actual sound — replay it anytime.
One tap generates a PDF noise level report with octave-band analysis. Export CSV, HTML or WAV too.
Capture photos and videos with the live noise level burned in — timestamped visual proof.
For landlords, site managers, HR — or your own records. Every measurement exports in the format the situation needs.


A real dosimeter, not a color bar — your exposure accumulates through the day against OSHA or NIOSH standards.
Photos and videos with the decibel readout, stats and a live equalizer burned into the frame — what you see is exactly what's saved.

Decibel levels of everyday sounds. Above 85 dB, prolonged exposure starts damaging your hearing.
Modern iPhone microphones are surprisingly consistent. Decibel Meter disables automatic gain control, applies IEC 61672 A-weighting, and lets you calibrate against a reference device — typically within a few dB of dedicated meters across the 30–110 dB range.
Prolonged exposure above 85 dB can damage hearing; 120 dB and above can cause immediate harm. The built-in dosimeter tracks your daily dose against OSHA and NIOSH limits.
Yes — each record keeps time, duration, location, charts and audio, and exports as a professional PDF report. A dated series of measurements is far stronger than a single reading.
Measuring is free and unlimited. Pro unlocks unlimited saved records, exports and advanced tools, with a 7-day free trial.