Noise Meter: dB Decibel

Accurate, real-time noise measurement in dB.
Noise Meter uses your phone’s microphone to analyze surrounding sound and display decibel (dB) levels instantly.
From quiet libraries to busy construction sites, understand and record your noise environment at a glance.


[Key features]

- Real-time, precise dB readings
Stable algorithms convert microphone input into decibel values quickly.

- Min / Max / Average tracking
See fluctuations over time—perfect for longer sessions and monitoring.

- Timestamp and location logging
Save measurements with date, time, and GPS-based address for reliable records.

- Context examples by noise level
Instantly compare to everyday scenes: Library, Office, Roadside, Subway, Construction, and more.

- Calibration for your device
Compensate for mic differences across phones for more accurate results.

- Save and capture results
Keep your data as images or files for sharing, analysis, or reports.


[Great for]
- Maintaining quiet spaces: study rooms, offices, libraries
- Site and facility management: workshops, factories, construction
- Schools and training spaces: classrooms, studios
- Wellness settings: yoga, meditation, relaxation
- Everyday analysis and record-keeping of environmental noise


[Accuracy notes]
- This app relies on the built-in microphone and is intended for reference, not as a certified sound level meter.
- For best accuracy, please run calibration on your device.
- Avoid wind, rubbing, or handling noise; measure from a steady position when possible.


[Permissions]
- Microphone (Required): measure sound levels in dB
- Location (Optional): attach address/coordinates to saved logs
- Storage (Optional): save screenshots and exported files