WLM Plus Loudness Meter vs Voxengo SPAN

WLM Plus Loudness Meter9.0Visit Voxengo SPAN8.8Visit

Higher score WLM Plus Loudness Meter #2 in Audio Analysis Software 9.0/10 Paid ✓ 3 of 3 features Visit Waves Audio

vs

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

• WLM Plus Loudness Meter fits best

  Loudness compliance across many DAWs

• Voxengo SPAN fits best

  Free plug-in spectrum analysis

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Side by side

Feature	WLM Plus Loudness Meter 9.0/10 Visit ↗	Voxengo SPAN 8.8/10 Visit ↗
At a glance
Editor score	9.0	8.8
Ranking	#2 in Audio Analysis Software	#4 in Audio Analysis Software
Best for	Loudness compliance across many DAWs	Free plug-in spectrum analysis
Pricing model	Paid	Free
Starting price	—	Free
Free plan	—	✓ (best)
Free trial	—	—
Deployment	Desktop	Desktop
Platforms	Windows, macOS	Windows, macOS
Built for	Small business, Mid-market, Enterprise	Solo, Small business, Mid-market
Features WLM Plus Loudness Meter 3/3 · Voxengo SPAN 2/3
Real-time analysis	✓	✓
Offline file analysis	✓ (best)	Not checked yet
Loudness standards	✓	✓
Specs
Maximum channels	6 channels	Not checked yet
Plugin support	Aax	Vst
Analysis views	momentary, short-term, long-term, loudness range, true peak, gain reduction	spectrum, loudness, level, RMS, true peak, clipping, correlation, mid/side
Our review
Pros	Supports ITU, EBU and ATSC loudness measurement standards Provides real-time and offline CSV logging Works across mono, stereo and multichannel workflows	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
Cons	Paid product without a free plan Channel capacity is limited to mono, stereo and 5.0 or 5.1 workflows Advanced metering may be more than needed for simple level checks	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
Our verdict	WLM Plus Loudness Meter is an audio plug-in for measuring and controlling loudness in music, podcasts, video, broadcast, movie trailers, games and other media. It is designed for producers, engineers and post-production teams working… Read the review →	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 →

Strengths and trade-offs

• WLM Plus Loudness Meter — where it wins

  • Supports ITU, EBU and ATSC loudness measurement standards
  • Provides real-time and offline CSV logging
  • Works across mono, stereo and multichannel workflows

  Where it doesn't

  • Paid product without a free plan
  • Channel capacity is limited to mono, stereo and 5.0 or 5.1 workflows
  • Advanced metering may be more than needed for simple level checks

• 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

• WLM Plus Loudness Meter9.0/10 · Paid

  A standards-focused loudness plugin for production across major DAWs.

  Visit Waves AudioFull verdict →
• Voxengo SPAN8.8/10 · Free plan

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

  Visit Voxengo SPANFull verdict →