Report bugs or request features on GitHub Issues.
For other inquiries, email support@soundgauge.pro.
Sound Gauge Pro uses your device's built-in microphone with A/C/Z frequency weighting filters based on the IEC 61672 standard. Readings are approximate with a typical tolerance of ±3 dB. For professional or regulatory measurements, use a certified sound level meter.
Go to Settings → Calibrate Meter. Play a known reference tone (e.g., 94 dB calibrator), enter the reference level, and tap Calibrate. The app will calculate and apply an offset to improve accuracy.
dBA approximates human hearing sensitivity — best for general noise measurement. dBC has a flatter response and is useful for measuring peak/impulse sounds. dBZ is completely unweighted (raw) for technical analysis.
Yes — Sound Gauge Pro works entirely offline. No internet connection is needed. All data stays on your device.
Open a recording from the History tab, then tap the share button in the top-right corner. You'll get a CSV file you can send via email, AirDrop, or save to Files.