Here are products (that I are aware of) that display the frequency spectrum of more than one track at a time. The products range from leading current products from major brands all the way to obscure obsolete indie products, so, to save you time, I have arranged the competing products into three groups: primary, secondary, and tertiary.

There are a lot of good products here, but none of them showed me what I want to see, which is why I created Strata. In particular, I wanted to see the spectra stacked, I wanted to see DAW track colours (especially in Ableton), I wanted to be able to resize the window, and I wanted it to be solid as a rock.

If you think I've missed a product, please start a Support Conversation.

Each group is in alphabetical order. This page was last updated on 11 April 2026.

Primary Competing Products

The primary competitors are quality products from major recognised plugin vendors. Typically, they support several recent versions of macOS and Windows, and AU, VST3, and AAX plugin formats.

Name	Description	Max Tracks	Price
Blue Cat FreqAnalyst Multi	Great if you want to see your spectra as lines.	16	US$99
FabFilter Pro-Q4	FabFilter Pro-Q4 is primarily a quality EQ, but it can display the spectrum of your tracks in separate graphs vertically stacked.	Unlimited	US$199
iZotope Insight2	iZotope Insight2 is primarily a metering tool, but it can display the spectrum of multiple tracks in one 3D graph.	Unlimited	US$159
Melda M Multianalyzer	A quality offering from Melda.	64	US$98
Schultz Audio Spectrum 2	A quality offering from Schultz.	Unlimited	US$99
Tokyo Dawn TDR Prism	Looks really nice, and it's free! Only four tracks though.	4	Free
Voxengo Span Plus	Span is excellent and free and everyone should have it. The paid Plus version can display multiple tracks.	Unlimited	~US$40

Secondary Competing Products

The secondary competitors don't look like gold-plated competitors, but are largely still good. Maybe they only do four tracks, or are only available on Windows, or haven't been updated lately, or don't have a clear website. Whatever the issue, they ended up here. :-)

Name	Description	Max Tracks	Price
2nd Sense Audio Mixing Analyzer	This software displays the spectrums of several tracks as lines.	At least 4	US$70
Hornet MultiFreqs	Looks interesting, but seems out of date, and there are no screenshots and the video on the page won't play.	28	€15
Psyscope	Primarily oscilloscope software, but has a "Stereo multi-track Analyser" view. Windows+VST3 only!	128	€29
Sir Audio Tools Spectrum Analyzer (Free Version)	This software will display the spectra of up to two tracks.	2	Free
Sir Audio Tools Spectrum Analyzer (Full Version)	This software will display the spectra of up to four tracks.	4	US$39
Sugar Audio Oscarizer	This software can display the spectra of up to ten tracks. It is interesting because it provides lots of different views of the spectra.	10	€49.95

Tertiary Competing Products

The tertiary competitors look like competitors, but appear to be obsolete, or support only old operating systems, or have broken checkout, or only show two spectrums, or are Linux only, or have some other problem. I have included then for completeness. Maybe if you have a specific use case, one of these might work for you.

Name	Description	Max Tracks	Price
LSP Spektrumanalysator - Spectrum Analyzer plugin series	This software will display the spectra of up to 16 tracks. Linux only.	16	Free
NUGEN Visualizer	This software allows you to display two spectrums together.	2	US$199
UFO Scientific MultiFreek	This software will display the spectra of up to seven tracks. Windows only.	7	US$9
UFO Scientific MultiFreek Junior	This is the free version of UFO Scientific MultiFreek. Windows only.	7	Free
Vertex DSP MultiInspector	This software will display up to 16 tracks. However, it appears to be only available for very old versions of macOS and Windows.	16	Checkout Seems Broken
Vertex DSP MultiInspectorFree	This is the free version of Vertex DSP MultiInspector. However, it appears to be only available for very old versions of macOS and Windows.	4	Free

Articles About Competing Products

Here are some articles that I've found about spectrum analyser products.

Best Spectrum Analyzer VST Plugins This article provides a review of six spectral analysis plugins. Only some of them display multiple tracks at once though.

6 Best Spectrum Analyzer Plugins in 2026 This article provides a review of six spectral analysis plugins. Not multi-track, but interesting.

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