SoundMeter X

Version 13 | iOS 18+

The original sound level meter app for iPhone, now evolved into SoundMeter X. Professional mobile sound level meter with multi-channel recording, data logging, octave analyzer, and more.

iPhone

iPad

Apple Watch

Features Tools Pricing Specs Screenshots

Turn your iPhone or iPad into a handheld data-logging sound level meter, noise dosimeter, signal generator, multi-channel recorder, and octave analyzer.

Standard Features

Included with all licenses

Sound Level Meter with basic SPL display

Noise Dosimeter with basic measurements

Free to use indefinitely

Pro Features

Additional features with Pro Tool Set license

User-defined custom metadata in saved audio and data files

Level Meter with Lp, Leq, Lx sound levels

Standard Flat, A, C frequency weighting

Standard Fast, Slow, Impulse time weighting

Data logging up to 2 weeks

Event notifications

Max Levels Meter with traffic-light display

Define warning and limit thresholds

Noise Dosimeter with 8-hour dose calculation

Projected dose and TWA calculations

80, 85, 90 dB criterion levels

3, 4, 5 dB exchange rates

Real-time Octave Spectrum Analyzer

Whole or 1/3-octave frequency bands

NC, RNC, NR reference curves

Multi-channel Data Recorder (up to 8 channels)

Stereo Signal Generator with sweeps

Analysis Tools

Comprehensive signal analysis and measurement tools

BasicBasic Tools

Level Meter

Basic

Sound pressure level measurement

Noise Dosimeter

Basic

Noise exposure measurement

ProProfessional Tools

MultiTool

Pro

Multi-analyzer display

Octave Analyzer

Pro

Whole and 1/3 octave band analysis

Max Levels

Pro

Maximum level threshold monitoring

Data Recorder

Pro

Multi-channel audio recording

Signal Generator

Pro

Stereo test signal generation

Pricing

Subscriptions

Subscriptions may be purchased in SoundMeter X via in-app purchase. One 14-day free trial is available.

SoundMeter Pro

$7.99/month

or $79.99/year ($6.67/mo)

Perpetual License

A SoundMeter Pro perpetual license may be purchased in SoundMeter X via in-app purchase.

SoundMeter Pro

$159.99

Specifications

Hardware Support

Supported Hardware: Any Core Audio compatible device, includes USB Audio Class compliant devices connected to iPhone or iPad via a suitable USB adapter
Audio Play-through: Enable/Disable

Input Device

Maximum Supported Input Channels: 16
Supported Sample Rates: 44100, 48000, 88200, 96000, 176400, 192000
Supported Units: Digital Full Scale (FS) and pascals (Pa, only when a known microphone device is selected—units are then synchronized with the first input channel)

Output Device

Maximum Supported Output Channels: 16
Supported Sample Rates: 44100, 48000, 88200, 96000, 176400, 192000

Input Channels

Maximum Sample Resolution: 32 bits, data processed internally with single (32-bit) or double (64-bit) precision
Supported Units: Digital Full Scale (FS), pascals (Pa)
Sensitivity Calibration: Manual entry, automatic calculation from reference input level

DC Offset Correction

Apply DC Blocking Filter: Enable/Disable

Output Channels

Maximum Sample Resolution: 32 bits, data processed internally with single (32-bit) or double (64-bit) precision

Options

Prevent Screen Auto-lock: Enable/Disable
Run In Background: Enable/Disable
Color Schemes (background color): Black, Blue, White, Gray
Plot Line Thickness: 1.0, 2.0, 3.0
Color Map (for bar or surface graphs): Classic, Inferno, Magma, Plasma, Viridis, White on Black, Black on White, Green on White, Green on Blue

Built-in Web Server (HTTP)