Decibel Meter: dB & Noise Log
Tools
Sound meter & noise level log with a night noise report
- Downloads
- 1+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Nov 1
- 2026 · v1.0.0
Screenshots
About Decibel Meter: dB & Noise Log
Decibel Meter: dB & Noise Log is a free decibel meter app and noise meter for Android that shows how loud it is around you, in dB(A), and keeps a noise log you can turn into a clear report. No ads, no tracking, no account.
WHY THIS DECIBEL METER APP
• Live decibel reading with min, average and max, plus a one-minute graph.
• A-weighted sound level, the weighting used by sound level meters (IEC 61672). A simple SPL meter, db meter and decibel reader in your pocket.
• "How loud is it?": see your reading next to common sounds, from a normal conversation to sirens, with typical levels from NIDCD (NIH) and CDC.
NOISE LOG AND NIGHT NOISE REPORT
This noise logger keeps working with the screen off. Start a noise log and the app saves one noise level value per second until you stop it (up to 12 hours). Then you get a report:
• average (Leq), min and max
• time above your own limit (for example 55 dB at night)
• every loud event with its time, length and peak
• your notes on each event
Share the report as PDF or CSV. It is a personal record of noise levels, useful when you want to know how loud a neighbor, an apartment, traffic or a machine really is over time, or what the noise level at night really is.
USE THIS SOUND METER APP FOR
• the noise level in an apartment or at night
• a motorcycle or car exhaust (a db meter for motorcycle checks)
• a decibel meter for headphones, music, a home theater or a sound system
• a classroom, an office or a workshop: a simple noise level meter and noise detector, with a report of every time the noise went above your limit
• before and after noise panels, or a fan, air conditioner or washing machine
PRIVACY FIRST
The microphone is used only to measure loudness. No audio is recorded, saved or sent. The app has no internet permission. Your noise logs stay on your phone.
HONEST ABOUT ACCURACY
A phone is not a calibrated sound level meter, so this sound level meter app gives approximate readings that can differ between phone models. The default level follows Android's microphone level target. If you have a reference meter, set a calibration offset in Settings.
FAQ
Is 70 decibels loud?
About as loud as a washing machine (CDC). NIDCD says sounds at or below 70 dBA are unlikely to cause hearing loss, even after long exposure.
How loud is too loud for your ears?
NIDCD says long or repeated exposure at or above 85 dBA can cause hearing loss.
How many decibels is a normal conversation?
About 60 to 70 dBA (NIDCD).
How loud is too loud in an apartment?
There is no single number: local and building rules differ. Set your own limit, and the noise report shows how long and how often the noise level went above it.
Is a phone decibel meter accurate?
It is approximate. With a reference meter, use the calibration offset for closer readings.
Is this sound meter app free?
Yes. It is a free sound meter app, noise meter and sound detector: every feature is free, with no ads and no in-app purchases.
This app is independent and not affiliated with any phone maker or sound meter brand. It is not a medical device and does not test or diagnose hearing.
WHY THIS DECIBEL METER APP
• Live decibel reading with min, average and max, plus a one-minute graph.
• A-weighted sound level, the weighting used by sound level meters (IEC 61672). A simple SPL meter, db meter and decibel reader in your pocket.
• "How loud is it?": see your reading next to common sounds, from a normal conversation to sirens, with typical levels from NIDCD (NIH) and CDC.
NOISE LOG AND NIGHT NOISE REPORT
This noise logger keeps working with the screen off. Start a noise log and the app saves one noise level value per second until you stop it (up to 12 hours). Then you get a report:
• average (Leq), min and max
• time above your own limit (for example 55 dB at night)
• every loud event with its time, length and peak
• your notes on each event
Share the report as PDF or CSV. It is a personal record of noise levels, useful when you want to know how loud a neighbor, an apartment, traffic or a machine really is over time, or what the noise level at night really is.
USE THIS SOUND METER APP FOR
• the noise level in an apartment or at night
• a motorcycle or car exhaust (a db meter for motorcycle checks)
• a decibel meter for headphones, music, a home theater or a sound system
• a classroom, an office or a workshop: a simple noise level meter and noise detector, with a report of every time the noise went above your limit
• before and after noise panels, or a fan, air conditioner or washing machine
PRIVACY FIRST
The microphone is used only to measure loudness. No audio is recorded, saved or sent. The app has no internet permission. Your noise logs stay on your phone.
HONEST ABOUT ACCURACY
A phone is not a calibrated sound level meter, so this sound level meter app gives approximate readings that can differ between phone models. The default level follows Android's microphone level target. If you have a reference meter, set a calibration offset in Settings.
FAQ
Is 70 decibels loud?
About as loud as a washing machine (CDC). NIDCD says sounds at or below 70 dBA are unlikely to cause hearing loss, even after long exposure.
How loud is too loud for your ears?
NIDCD says long or repeated exposure at or above 85 dBA can cause hearing loss.
How many decibels is a normal conversation?
About 60 to 70 dBA (NIDCD).
How loud is too loud in an apartment?
There is no single number: local and building rules differ. Set your own limit, and the noise report shows how long and how often the noise level went above it.
Is a phone decibel meter accurate?
It is approximate. With a reference meter, use the calibration offset for closer readings.
Is this sound meter app free?
Yes. It is a free sound meter app, noise meter and sound detector: every feature is free, with no ads and no in-app purchases.
This app is independent and not affiliated with any phone maker or sound meter brand. It is not a medical device and does not test or diagnose hearing.