Noise Meter: Decibel dB Meter

SecondEarth

Contains adsIn-app purchases

About this app

Noise Meter turns your phone into a real-time decibel meter and sound level meter for everyday noise checks.

Open the app to see the current dB level on an analog gauge and digital readout. Follow changes on a live 60-second chart and review MIN, AVG (Leq), MAX and PEAK values. Choose A/C/Z frequency weighting or Fast/Slow response, adjust the calibration offset for your device, then save and share the session.

MEASURE AT A GLANCE
- Real-time decibel (dB) reading
- Analog gauge and clear digital display
- MIN / AVG (Leq) / MAX / PEAK levels
- Live 60-second noise chart
- Pause, reset and save sessions
- Noise-level reference guide

ADJUST THE METER
- A, C and Z frequency weighting
- Fast (125 ms) and Slow (1 s) response
- Per-device calibration offset

SAVE AND SHARE
- Measurement history with labels
- Session details and timeline
- Text sharing
- CSV export with Premium

PREMIUM, ONE-TIME PURCHASE
- 1/3-octave spectrum analyzer with peak hold
- L10 / L50 / L90 statistics
- NIOSH and OSHA dose estimates with 8-hour TWA
- Unlimited measurement history
- CSV export

USE IT TO CHECK
- Noise at home or from nearby rooms
- Office, cafe and street sound levels
- TV, music and speaker volume
- General workplace noise awareness

PRIVATE BY DESIGN
Audio is analyzed on your device and is not stored or uploaded.

REFERENCE ONLY
Phone microphones and readings vary by device and environment. Noise Meter does not replace a calibrated professional sound level meter and should not be used as legal evidence or as the sole basis for health and workplace-safety decisions.

What’s new

A clearer result-first Premium path: measure live dB free, then unlock detailed analysis, CSV export, and unlimited history after a meaningful reading. The same one-time lifetime purchase remains—no subscription. Text sharing and the first 10 saved sessions stay free, and a canceled purchase returns you safely to your result.