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TDR Prism vs iZotope Insight 2: catalog facts
TDR Prism	iZotope Insight 2
Free Distributed by Tokyo Dawn Records as a free plugin.	Paid Commercial plugin sold by iZotope.
Windows, macOS	Windows, macOS
Human auditory model with masking indication Compares spectra from inputs, sidechains, files and other instances	Covers loudness standards needed for streaming and broadcast delivery From an established audio software maker
Runs as a plugin, so it needs a DAW or plugin host Analysis only, with no processing of the audio	Paid plugin aimed at professional workflows Adds another metering tool alongside a DAW's built-in meters
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
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 22, 2026

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