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iZotope Insight 2 vs Voxengo SPAN: catalog facts
iZotope Insight 2	Voxengo SPAN
Paid Commercial plugin sold by iZotope.	Free Available without a software purchase.
Windows, macOS	Windows, macOS
Covers loudness standards needed for streaming and broadcast delivery From an established audio software maker	Shows frequency spectra and signal statistics Includes correlation and loudness metering
Paid plugin aimed at professional workflows Adds another metering tool alongside a DAW's built-in meters	Requires a compatible plug-in host.
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.