The sound level meter that lives in your pocket

Measure noise in real time, track your daily exposure with an OSHA/NIOSH dosimeter, and turn measurements into professional PDF noise reports — evidence, not arguments.

Download on the App Store Free to measure · Pro trial for 7 days · iPhone

Try the gauge

A taste of the real thing — in the app it reacts to your environment at up to 120 fps.

Everything a professional meter does — and more

Built on IEC 61672 weighting filters and a calibrated audio pipeline, with the tools you actually need when noise becomes a problem.

🎚️

Real-time dB measurement

Live sound level with A, C and Z frequency weighting, min/avg/max/peak values and a smooth 120 fps gauge.

📊

FFT spectrum analyzer

See the full 20 Hz–20 kHz picture with a live spectrum, max-hold trace and dominant frequency readout.

🦺

Noise dosimeter

OSHA and NIOSH standards, daily dose %, TWA and permissible exposure times — know when it's too loud, for how long.

🎙️

Records with audio

Every saved measurement keeps its chart, statistics, location and the actual sound — replay it anytime.

📄

Professional reports

One tap generates a PDF noise level report with octave-band analysis. Export CSV, HTML or WAV too.

📷

Camera with dB overlay

Capture photos and videos with the live noise level burned in — timestamped visual proof.

Reports people take seriously

For landlords, site managers, HR — or your own records. Every measurement exports in the format the situation needs.

  • PDF noise level report — LAeq, octave-band table, QR
  • CSV time series, original WAV audio, HTML report
  • Location, device and calibration recorded with every entry
Generated PDF noise level report with spectrum chart and octave band table
Noise dosimeter with OSHA exposure table and daily noise dose

Know your daily noise dose

A real dosimeter, not a color bar — your exposure accumulates through the day against OSHA or NIOSH standards.

Shoot with live dB

Photos and videos with the decibel readout, stats and a live equalizer burned into the frame — what you see is exactly what's saved.

  • 4:3, 16:9 and 1:1 — recording matches the preview
  • Overlay styles from minimal to full EQ
  • Recording timer embedded in your videos
Camera recording a concert with a live dB overlay

How loud is too loud?

Decibel levels of everyday sounds. Above 85 dB, prolonged exposure starts damaging your hearing.

30 dBWhisper, quiet library
60 dBNormal conversation
85 dBCity traffic — hearing damage risk begins
100 dBSubway, power tools — max 15 min/day
120 dBConcert front row — immediate risk

Frequently asked questions

How accurate is a phone decibel meter?

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.

What noise level is harmful?

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.

Can I use measurements as evidence for a noise complaint?

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.

Is the app free?

Measuring is free and unlimited. Pro unlocks unlimited saved records, exports and advanced tools, with a 7-day free trial.