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StemRoller vs Splitter.ai: catalog facts
StemRoller	Splitter.ai
Free Free, released under your choice of the Unlicense or MIT No Attribution.	Freemium Free uploads are available, with extra features in the paid Splitter PRO tier.
Windows, macOS	Web
One-click stem separation using Demucs Built-in YouTube search to find songs	Runs in the browser with nothing to install Free tier for basic stem separation
Linux is not officially supported Splitting a song takes several minutes	Audio has to be uploaded to a third-party server Best-quality separation and extra features require a paid plan
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 October 2, 2026

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