Noise Meter

Noise Meter turns your phone into a real-time decibel (dB) meter for measuring environmental noise — at home, at the office, on the street, or at the gym.

[Key features]

• Real-time dB measurement using your device microphone

• Beautiful analog gauge with color-coded noise levels:

- Quiet (< 40 dB) — very quiet environment

- Normal (40–70 dB) — conversational level

- Loud (70–90 dB) — caution on prolonged exposure

- Dangerous (90+ dB) — risk of hearing damage

• History: every recording is saved with max, average, and duration

• dB timeline graph in the record detail view

• Microphone calibration: align readings to a known reference (SPL meter, calibration tone, etc.)

• Easy sharing: capture the meter screen and share to messaging or social apps in one tap

• Multilingual: English and Korean

[Privacy first]

• The microphone is only used for measurement — no audio is recorded, transmitted, or stored

• Microphone is automatically released when the app goes to the background

• No account, no signup, no personal-information tracking

[Accuracy notes]

Readings depend on your device microphone, which is not a laboratory-grade sensor. For absolute SPL accuracy, use the built-in calibration feature together with a reference SPL meter. The displayed values are a practical indicator, not a certified measurement.

[Ad-supported]

This app shows banner and app-open ads to support free development. GDPR consent is collected in supported regions; ad-personalization preferences can be changed any time in Settings.

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