Sound Gauge Pro

Sound Gauge Pro is a precision decibel meter that turns your iPhone into a real-time sound level monitor. No ads, no subscriptions, and no data collection.

Sound Gauge Pro is a precision decibel meter that turns your iPhone into a real-time sound level monitor. Built for musicians, parents, renters, and workplace safety — with no ads, no subscriptions, and no data collection.

REAL-TIME METERING • Live dB readings with a responsive arc gauge and animated needle • A-weighting (dBA) for human hearing, C-weighting (dBC) for flat response, Z-weighting (dBZ) for raw measurement • Peak, average, and minimum stats updated in real time

SESSION RECORDING • Record sound levels over time with one tap • Review past sessions with interactive charts • Track peak, average, and minimum dB for every recording

EXPORT & SHARE • Export any session as a CSV file • Share via AirDrop, email, or save to Files • Includes timestamped readings and session summary

CALIBRATION • Calibrate against a known reference source for improved accuracy • Adjustable offset stored between sessions

PRIVACY FIRST • No internet connection required — works entirely offline • No analytics, no tracking, no ads • Microphone audio is processed in real time and never stored

HONEST ABOUT ACCURACY Sound Gauge Pro uses IEC 61672 A/C-weighting filters for frequency correction. Readings are approximate (±3 dB) due to device microphone limitations. For regulatory or professional measurements, use a certified sound level meter.

One price. No tricks. Just a great decibel meter.