Decibel Meter - Noise Meter dB

Super Dev Labs

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About this app

Decibel Meter turns your phone into a precise sound level meter and noise meter. See how loud your surroundings are in real time, record a noise log, and export the measurements to CSV, all in one clean, easy app.

🎚️ ACCURATE DECIBEL METER (dB METER)
• Real-time sound level in dB(A), dB(C) and dB(Z), following IEC 61672 frequency weighting
• Fast (125 ms) and Slow (1 s) response, just like a professional SPL meter
• Leq (average), Min, Max and Peak readings with a max-hold marker
• Reads the microphone without automatic gain control for stable, honest readings
• Overload and "microphone busy" warnings, so you know when a reading can't be trusted

📈 LIVE NOISE GRAPH & FREQUENCY ANALYZER
• 60-second live graph of the noise level with an alarm line
• 1/3-octave frequency spectrum analyzer from 31.5 Hz to 16 kHz
• Dominant frequency readout: find the hum, whine or buzz

📝 NOISE LOG & NOISE MONITOR
• Record a noise log with Leq, Lmin, Lmax and peak saved every second
• Every session shows L10, L50 and L90 noise statistics, a level-over-time chart and the time spent at each level
• Estimated daily noise dose based on the NIOSH limit (85 dB(A) for 8 hours)
• Rename sessions and add a note or location: handy for neighbour noise, traffic noise or workplace checks

📤 EXPORT TO CSV
• Save any noise log as a CSV file, or share it by email, Drive or chat
• Opens in Excel, Google Sheets and other spreadsheet apps
• Export a summary of all your noise logs in one file

🎯 CALIBRATION FOR ACCURACY
• Adjust the calibration offset in 0.1 dB steps
• "Match reference meter": enter a calibrated sound level meter's reading and the app calibrates itself
• Calibration is saved with every noise log

🔔 NOISE ALARM & HEARING PROTECTION
• Set a noise level alert: the gauge flashes and your phone vibrates when it's too loud
• Built-in noise guide with everyday sound levels in decibels (dB)
• Safe exposure times: learn how long each noise level is safe for your hearing

WHO IS IT FOR?
Checking noise from neighbours, traffic, construction or loud music · measuring noise levels at home, the office, a classroom or a workshop · checking your home studio, speakers or home theatre · anyone who wants to protect their hearing.

🔒 PRIVACY FIRST
The microphone is used only to measure the sound level. Audio is analysed instantly on your device and is never recorded, stored or uploaded. Only the decibel numbers are saved when you choose to record a noise log.

ℹ️ ACCURACY NOTE
Phone microphones are not certified measuring instruments, so readings are estimates. For the most accurate results, calibrate against a reference sound level meter. Don't use this app for legal, medical or occupational compliance; use a certified Class 1 or Class 2 sound level meter for that.

Download Decibel Meter: a sound meter, noise detector, dB meter and noise log in one app.

What’s new

Sound db meter