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Head-to-head · Audio Analysis Software

Voxengo SPAN vs Room EQ Wizard

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Voxengo SPAN #4 in Audio Analysis Software 8.8/10 Free plan Free plan✓ 2 of 3 features Visit Voxengo SPAN
Room EQ Wizard #5 in Audio Analysis Software 7.9/10 Free plan Free plan✓ 2 of 3 features Visit Room EQ Wizard

Voxengo SPAN leads on 0 checks, Room EQ Wizard on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreVoxengo SPAN · 8.8/10
  • Free planboth

Voxengo SPAN scores higher on our rubric for audio analysis software: 8.8 against 7.9 out of 10; our editors rank them #4 and #5.

Voxengo SPAN is the better fit for free plug-in spectrum analysis. Room EQ Wizard is the better fit for comprehensive room and acoustic analysis.

  • Voxengo SPAN fits best

    Free plug-in spectrum analysis

  • Room EQ Wizard fits best

    Comprehensive room and acoustic analysis

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Side by side

Feature Voxengo SPAN 8.8/10 Visit ↗ Room EQ Wizard 7.9/10 Visit ↗
At a glance
Editor score 8.8 7.9
Ranking #4 in Audio Analysis Software #5 in Audio Analysis Software
Best for Free plug-in spectrum analysis Comprehensive room and acoustic analysis
Pricing model Free Free plan + paid
Starting price Free —
Free plan ✓ ✓
Free trial — —
Deployment Desktop Desktop
Platforms Windows, macOS Windows, macOS, Linux
Built for Solo, Small business, Mid-market Solo, Small business, Mid-market
Features Voxengo SPAN 2/3 · Room EQ Wizard 2/3
Real-time analysis ✓ ✓
Offline file analysis Not checked yet ✓ (best)
Loudness standards ✓ (best) Not checked yet
Specs
Maximum channels Not checked yet 32 channels
Plugin support Vst Not checked yet
Analysis views spectrum, loudness, level, RMS, true peak, clipping, correlation, mid/side spectrum, RTA, waveform, impulse response, phase, group delay, spectral decay, waterfall, spectrogram, energy-time, reverberation time, distortion
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
  • Broad measurement and analysis coverage across room and audio workflows
  • Free plan includes real-time, offline, EQ, and measurement tools
  • Runs on Windows, macOS, Linux, with API access
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
  • Simultaneous multi-input capture requires the Pro upgrade
  • Speech Transmission Index calculation requires the Pro upgrade
  • The extensive feature set may exceed simple measurement needs
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 →

Room EQ Wizard is desktop software for measuring and analyzing room, speaker, subwoofer, and audio-device performance. It is aimed at home-theater users, studio operators, audio engineers, and professional acoustic practitioners who need…

Read the review →
  1. Voxengo SPANAudio Analysis Software 8.8Free plan
  2. Room EQ WizardAudio Analysis Software 7.9Free plan

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

  • Room EQ Wizard — where it wins

    • Broad measurement and analysis coverage across room and audio workflows
    • Free plan includes real-time, offline, EQ, and measurement tools
    • Runs on Windows, macOS, Linux, with API access

    Where it doesn't

    • Simultaneous multi-input capture requires the Pro upgrade
    • Speech Transmission Index calculation requires the Pro upgrade
    • The extensive feature set may exceed simple measurement needs

More comparisons

All audio analysis software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update