Open Audio Analyzer

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Score7.4

Rank#2 of 42

PriceFree

Free planYes

Runs onAndroid, iOS, Linux, macOS, Windows

Summary

Open Audio Analyzer is a free, open-source tool for measuring loudness and spectrum in live audio and audio files. It runs on Android, iOS, Linux, macOS and Windows, and provides fourteen meter types that users can arrange, including loudness, true peak, VU, spectrum, spectrogram, oscilloscope, phase scope and histogram. Loudness measurements follow EBU R 128 and ITU-R BS.1770-4, covering momentary, short-term and integrated LUFS, loudness range and oversampled true peak. Users can organize meters across tabs, save layouts as presets and select streaming or broadcast delivery targets, or create their own. File analysis is also available through a command-line tool, which can process individual files or album folders and produce reports or CSV output. VST3 and Audio Unit plugins send measurements and DAW transport position to the app. A tablet on the same network can display published measurements over Wi-Fi. The maker says measurement happens on-device and audio is not stored or transmitted. The remote display link lacks encryption and authentication.

Who it is for

It suits audio users who need loudness or spectrum measurements for live audio, files or DAW sessions across supported desktop and mobile platforms. Users considering the Wi-Fi tablet display should limit it to a trusted network because that link lacks encryption and authentication.

What is good

Free and open-source.
Fourteen arrangeable meter types.
Supports EBU R 128 and ITU-R BS.1770-4.
CLI can analyze files or album folders.
Runs on Android, iOS, Linux, macOS and Windows.

What to know first

Remote display link has no encryption or authentication.
AAX plugin is not signed for a released Pro Tools version.

Verdict

Open Audio Analyzer combines live and file analysis with configurable meters, delivery targets and CLI reporting. Its remote tablet display has no encryption or authentication, so the maker advises using it only on a trusted network.

Open Audio Analyzer plans and pricing

All plans

Free software Free Available at no charge · No payment or paid plans stated · GPL-3.0-or-later app and engine; AGPL-3.0-or-later plugin open-audio-analyzer.com · 29 Sept 2026

Compared on audio analysis software

Free plan: Yesopen-audio-analyzer.com
Real-time analysis: Yesopen-audio-analyzer.com
Offline file analysis: Yesopen-audio-analyzer.com
Loudness standards: Yesopen-audio-analyzer.com
Plugin support: vstopen-audio-analyzer.com
Analysis views: loudness, true peak, VU, spectrum, spectrogram, oscilloscope, phase scope, histogram, loudness distribution, stereo cloudopen-audio-analyzer.com

Facts

Purpose: Open Audio Analyzer is a free, open-source loudness and spectrum analyzer for live audio and audio files.open-audio-analyzer.com · 29 Sept 2026
Meter modules: It offers fourteen arrangeable meter module types, including loudness, true peak, VU, spectrum, spectrogram, oscilloscope, phase scope and histogram.open-audio-analyzer.com · 29 Sept 2026
Measurement standards: Loudness measurements follow EBU R 128 and ITU-R BS.1770-4, including momentary, short-term and integrated LUFS, loudness range and oversampled true peak.open-audio-analyzer.com · 29 Sept 2026
Custom layouts: Users can arrange meters across tabs and save layouts as presets, with delivery targets and colour skins.open-audio-analyzer.com · 29 Sept 2026
Delivery checks: The app includes streaming and broadcast delivery targets and allows users to create their own targets.open-audio-analyzer.com · 29 Sept 2026
File analysis and CLI: The command-line tool analyzes individual files or album folders and can produce readable reports or CSV output.open-audio-analyzer.com · 29 Sept 2026
DAW plugins: VST3 and Audio Unit plugins send measurements and DAW transport position to the app; an AAX plugin is available in the plugin archive but is not yet signed for a released Pro Tools version.open-audio-analyzer.com · 29 Sept 2026
Tablet display: A tablet on the same network can display the desktop app’s published measurements and canvas layout over Wi-Fi.open-audio-analyzer.com · 29 Sept 2026
Platforms: The maker lists desktop downloads for macOS 14.2+, Windows 10 1809+ and Linux; its privacy policy also covers iPadOS and Android builds.open-audio-analyzer.com · 29 Sept 2026
Privacy: The maker says the app has no accounts, analytics, telemetry, crash reporting or advertising, and computes measurements on the user’s device.open-audio-analyzer.com · 29 Sept 2026
Network security limit: The remote display link has no encryption or authentication, and the maker advises publishing only on a trusted network.open-audio-analyzer.com · 29 Sept 2026
Audio handling: The maker says audio is measured in memory, discarded, never recorded or stored, and never transmitted by the app.open-audio-analyzer.com · 29 Sept 2026
Support: The maker directs technical questions to its public GitHub issue tracker.open-audio-analyzer.com · 29 Sept 2026
Maker: The site identifies Jonas Grunau as its publisher and gives Kirchheim, Germany as the address.open-audio-analyzer.com · 29 Sept 2026