Voxengo SPAN vs Open Audio Analyzer

Voxengo SPAN8.8Visit Open Audio Analyzer7.6Visit

Higher score Voxengo SPAN #4 in Audio Analysis Software 8.8/10 Free plan Free plan✓ 2 of 3 features Visit Voxengo SPAN

vs

Open Audio Analyzer #8 in Audio Analysis Software 7.6/10 Free plan Free plan✓ 3 of 3 features Visit site

• Voxengo SPAN fits best

  Free plug-in spectrum analysis

• Open Audio Analyzer fits best

  Free standards-based audio analysis

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Side by side

Feature	Voxengo SPAN 8.8/10 Visit ↗	Open Audio Analyzer 7.6/10 Visit ↗
At a glance
Editor score	8.8	7.6
Ranking	#4 in Audio Analysis Software	#8 in Audio Analysis Software
Best for	Free plug-in spectrum analysis	Free standards-based audio analysis
Pricing model	Free	Free
Starting price	Free	Free plan
Free plan	✓	✓
Free trial	—	—
Deployment	Desktop	Desktop, Mobile
Platforms	Windows, macOS	Windows, macOS, Linux, iOS, Android
Built for	Solo, Small business, Mid-market	Solo, Small business, Mid-market
Features Voxengo SPAN 2/3 · Open Audio Analyzer 3/3
Real-time analysis	✓	✓
Offline file analysis	Not checked yet	✓ (best)
Loudness standards	✓	✓
Specs
Maximum channels	Not checked yet	Not checked yet
Plugin support	Vst	Vst
Analysis views	spectrum, loudness, level, RMS, true peak, clipping, correlation, mid/side	loudness, true peak, VU, spectrum, spectrogram, oscilloscope, phase scope, histogram, loudness distribution, stereo cloud
Our review
Pros	Real-time FFT, spectrum smoothing and configurable display modes Stereo, mono, mid-side and multichannel analysis with channel routing EBU R128, K-system, true-peak, clipping and correlation metering	EBU R 128 and ITU-R BS.1770-4 loudness measurement Real-time and offline analysis with reports and pass/fail targets VST3, Audio Unit, AAX and command-line workflows
Cons	Requires a compatible audio host rather than operating as a standalone tool Analysis-focused feature set does not include audio editing functions Available as a single Free plan without tiered workflow options	Focused on analysis rather than audio production or editing Offline file analysis supports a defined set of audio formats Tablet session mirroring requires a Wi-Fi connection
Our verdict	Voxengo SPAN is a free real-time FFT audio frequency spectrum analyzer plug-in for music and audio production applications. It is designed for producers, engineers and audio professionals who need detailed visual analysis inside a… Read the review →	Open Audio Analyzer is a free, open-source application for musicians, audio engineers and mastering workflows. It covers live-audio analysis, recorded-file analysis, loudness measurement, delivery validation and reporting across Windows,… Read the review →

Strengths and trade-offs

• Voxengo SPAN — where it wins

  • Real-time FFT, spectrum smoothing and configurable display modes
  • Stereo, mono, mid-side and multichannel analysis with channel routing
  • EBU R128, K-system, true-peak, clipping and correlation metering

  Where it doesn't

  • Requires a compatible audio host rather than operating as a standalone tool
  • Analysis-focused feature set does not include audio editing functions
  • Available as a single Free plan without tiered workflow options

• Open Audio Analyzer — where it wins

  • EBU R 128 and ITU-R BS.1770-4 loudness measurement
  • Real-time and offline analysis with reports and pass/fail targets
  • VST3, Audio Unit, AAX and command-line workflows

  Where it doesn't

  • Focused on analysis rather than audio production or editing
  • Offline file analysis supports a defined set of audio formats
  • Tablet session mirroring requires a Wi-Fi connection

• Voxengo SPAN8.8/10 · Free plan

  A mature free analyzer for spectrum, loudness, metering, correlation and multichannel work.

  Visit Voxengo SPANFull verdict →
• Open Audio Analyzer7.6/10 · Free plan

  A standards-based analyzer for live audio, files, DAWs and delivery checks.

  Visit siteFull verdict →