Sound Meter dB

Chinese Powered Labs

Contains ads

About this app

Sound Meter dB turns your phone into a live sound level meter: an instant decibel readout on an analog-style gauge, color-coded from quiet teal to dangerous red.

Open it, tap Start, and point the phone at the question — the party next door, the office HVAC, the restaurant that "isn't that loud", the machine that might be. This dB meter takes ten readings a second, smoothed like a real SPL meter, so the needle reads like an instrument instead of a seismograph.

THE GAUGE
A 0-120 dB arc in eight color zones: teal and green while things are comfortable, yellow and orange as noise gets noticeable and loud, and reds from 80 dB up, where prolonged exposure starts to carry hearing risk. Past 100 dB the whole readout turns red and says so.

EVERY READING, IN PLAIN ENGLISH
Numbers alone don't mean much, so every noise level gets a label and a familiar reference: 40 dB is a quiet library, 60 a normal conversation, 75 a vacuum cleaner, 95 power tools, 110 a rock concert. You know at a glance whether you're fine or should reach for earplugs.

MIN, AVG AND MAX
Session stats run under the needle: minimum, average and maximum sound level since you pressed Start. Reset any time and measure the next thing.

WORKS OFFLINE, STAYS PRIVATE
Audio is analyzed on your device to produce one number. Nothing is uploaded, no account exists, and the noise meter runs with no connection at all.

THE HONEST PART
Phone microphones are built for voice, not metrology — they aren't calibrated, and every model hears a little differently. Readings are good estimates: right for awareness, comparisons and settling "how loud is this really?", not a substitute for a certified Class 1 or Class 2 sound level meter.

GOOD FOR
- Checking noise levels around the home, office or workshop
- Concerts, venues and events — knowing when to give your ears a break
- Sleep and study environments
- Comparing rooms, streets, appliances and commutes
- Showing kids what decibels actually mean

Sound Meter dB is a free decibel meter, supported by ads (a small banner under the meter and an occasional ad when the app opens). Every feature is available to everyone.

What’s new

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