Sound Meter - Decibel Meter

📊 Accurate, Easy Decibel Meter — Sound Meter

Measure the noise level around you in real time, using nothing but your phone's mic — no extra equipment needed.
From floor noise between apartments, construction noise, and cafe/office noise to checking your earphone volume —
Sound Meter is the noise meter app for every moment you need a decibel (dB) reading.

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🎚 Real-Time Noise Measurement
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· Shows the current decibel (dB) level as a live number
· Min / Avg / Max / Peak values summarized at a glance
· Instantly see the noise level (Quiet to Very Loud) with a color badge
· Visualize how noise changes over time with a live graph
· Save measurement results as a record, with your own notes

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🔊 Frequency Analysis (FFT)
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· Switch between Spectrum and Waveform views
· Automatically detects and displays the Dominant Frequency
· Zoom in on any frequency range with the range slider
· Useful for identifying the components of complex, mixed-frequency noise

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🎧 Filtered Listening
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· Built-in Low / Mid / High presets
· Or set your own custom range, or a center frequency ± bandwidth
· A/B compare the original sound against the filtered sound instantly
· Useful when you want to isolate and listen to a specific frequency band

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📁 Measurement History
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· Browse and search your saved measurements
· Filter records by date range
· Reopen any record to view its graph again
· Export your entire history to CSV

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🔒 Your Privacy, Handled with Care
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· Raw audio (PCM) captured by the mic is discarded immediately after the dB calculation
· No sound data is ever sent to a server — all analysis happens on your device
· Only calculated data, like decibel readings, is stored on your device
· No audio recordings are ever created or saved
Who is this for?
· Anyone who wants to keep a numerical record of floor noise or everyday household noise
· Anyone who wants to check the noise level of a venue, cafe, or office
· Anyone who wants to compare earphone/headphone volume or listen to a specific frequency band
· Anyone who wants to export noise data as CSV for a report or a formal complaint

Try Sound Meter now, and see — and hear — the noise around you.