Sound Meter: Decibel Meter

Turn your phone into a real-time sound level meter. Sound Meter measures the noise around you in decibels (dB) and shows it on a smooth, animated gauge — instantly, with no setup.

Whether you're checking a noisy workplace, a loud concert, your home, traffic, or just curious how loud something really is, Sound Meter gives you a clear, color-coded reading at a glance.

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KEY FEATURES
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● REAL-TIME DECIBEL GAUGE
A beautiful animated needle gauge shows the current sound level as it happens, with four easy-to-read color zones:
• Green — quiet (0–60 dB)
• Yellow — moderate (60–85 dB)
• Orange — loud (85–120 dB)
• Red — dangerous (120+ dB)

● LIVE STATS
See your current, minimum, peak, and maximum readings at a glance.

● HISTORY GRAPH
A rolling 60-second chart shows how noise levels change over time, with threshold markers.

● RECORD SESSIONS
Start a recording to capture a noise session — Sound Meter saves its duration and average, minimum, and maximum decibel levels so you can review it later.

● SAVE & COMPARE READINGS
Snapshot a moment, give it a name, and compare readings between different rooms, places, or situations.

● DAILY EXPOSURE REPORT
Review a summary of your sound exposure over time.

● NOISE EXPOSURE TRACKING (OPTIONAL)
An optional noise dose indicator based on the 85 dB / 8-hour standard helps you keep an eye on prolonged loud exposure.

● THRESHOLD ALERTS
Set a decibel limit and get a vibration alert when it's exceeded.

● CALIBRATION
Fine-tune readings with an adjustable offset (-20 to +20 dB) to better match a reference meter.

● DARK & LIGHT THEMES
A pure-black OLED-friendly dark mode (default) plus a clean light mode.

● HANDY EXTRAS
• Keep the screen awake while measuring
• Share a screenshot of your reading

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PRIVATE BY DESIGN
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Your privacy comes first. The microphone is used only to measure loudness — NO audio is ever recorded, saved, or sent anywhere. All your sessions, readings, and settings stay on your device.

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PLEASE NOTE
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Sound Meter is for informational and educational use. Accuracy depends on your device's microphone and built-in limits, so it is not a replacement for a professionally calibrated sound level meter. Please don't rely on it for occupational safety, legal, or medical decisions. Using the calibration setting against a known reference will improve accuracy.

Download Sound Meter and find out how loud your world really is.