Professional
Decibel Metering
for iPhone

Accurate, beautiful, and honestly priced. Real-time sound level measurement with IEC 61672-based frequency weighting filters, session recording, and CSV export.

Download on the App Store
A / C / Z
Weighting Modes
30 fps
Live Gauge
$1.99
One-Time Buy
Sound Gauge Pro live meter showing 42.1 dB reading with arc gauge

Everything You Need.
Nothing You Don't.

monitoring

Real-Time Metering

Live dB readings at 30 frames per second with an animated arc gauge. Switch between A, C, and Z frequency weighting with a tap. Min, average, and peak stats update continuously.

fiber_manual_record

Session Recording

Record sound levels over time. Review sessions with interactive charts and summary statistics — peak, average, min, duration, and reading count.

Session recording detail showing a coffee shop noise chart with peak 62.1 dB and average 53.2 dB
csv

CSV Export

Share your measurements as CSV files for analysis in any spreadsheet app, MATLAB, or Python.

TIMESTAMP, DB_A, DB_C, PEAK
1710934802.01, 42.1, 44.5, 48.2
1710934802.02, 41.9, 44.2, 47.9
tune

Calibration

Calibrate against a reference source for improved accuracy. iPhone microphones have an inherent ~3 dB tolerance — we're transparent about that. For tighter results, use an external reference mic.

Professional Grade.
Personal Price.

$1.99
one-time purchase

No ads. No subscriptions. No tracking.
Just precise, honest metering for life.

Get Sound Gauge Pro

Available exclusively on the iOS App Store