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StemRoller vs MVSEP: catalog facts
StemRoller	MVSEP
Free Free, released under your choice of the Unlicense or MIT No Attribution.	Freemium Free to use, with some ensemble models limited to premium users.
Windows, macOS	Android, iOS, Web
One-click stem separation using Demucs Built-in YouTube search to find songs	Wide choice of separation models with usage and ratings shown Many stem types beyond vocals and instrumental
Linux is not officially supported Splitting a song takes several minutes	Best ensemble models require a premium account Audio is processed on the service's servers
Downloadable app	Downloadable app, Web application
Open source	Closed source
License: Unlicense OR MIT-0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 26, 2026

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