SoundMeter: Sound Level Meter

Sound Meter turns your phone microphone into a practical relative decibel meter for checking noise at home, at work, or in a space you are evaluating. A live gauge shows the current level in dB along with the minimum, average, and maximum for the session, and a rolling chart plots the last sixty seconds so you can see spikes as they happen.

Key features
• Live relative dB gauge with min, average, and max
• Sixty-second rolling chart for spikes and trends
• Everyday reference labels (whisper to concert) for orientation only
• Named readings with notes for rooms or times of day
• Calibration offset to align with a reference meter on this device
• Share a clean reading summary when you need a quick checkpoint

Reference labels compare your reading to familiar everyday sounds such as a quiet room, conversation, traffic, and power tools — for orientation only, not as a certified hearing or occupational safety measurement. Readings from a phone mic are approximate and can vary by device; use them for relative comparison, not medical diagnosis or absolute compliance checks.