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SPECIFICTION
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StemRoller

stemroller.com

Free plan WindowsmacOS
Visit stemroller.com
Spec score 7.6 #20 of 26 in AI stem splitters

What it is

StemRoller is a free desktop application for turning songs into karaoke, vocal, and instrumental material. Search by song title and it finds results online through YouTube search integration. Using the Demucs machine-learning project, StemRoller separates a song into four outputs: vocals, drums, bass, and everything else. It also mixes the non-vocal stems into an instrumental track. Splitting takes several minutes, and batch processing is not available. The maker describes StemRoller as open source, with the README offering either the Unlicense or MIT No Attribution license. The homepage links to a macOS ZIP and a Windows CUDA executable, version 3.1.1. Linux is not officially supported, although the README provides manual dependency setup instructions. The Free plan costs nothing and includes four stem outputs plus an instrumental track. Questions and issues can be taken to Discord.

Spec sheet

Purpose
StemRoller creates karaoke, vocal, and stem tracks from songs.Read 5 Oct 2026 · stemroller.com
Platforms
The maker's releases page provides downloads for Windows and macOS.Read 4 Oct 2026 · github.com
Integrations
StemRoller uses YouTube search results to find songs, according to its GitHub README.Read 5 Oct 2026 · github.com
Support
The maker offers help through its Discord server.Read 5 Oct 2026 · stemroller.com
License
The repository offers a choice of Public Domain (Unlicense) or MIT No Attribution licensing.Read 5 Oct 2026 · github.com
Algorithm
StemRoller uses Demucs, a machine learning project, to separate stems.Read 4 Oct 2026 · stemroller.com
Downloads
The homepage links to a macOS ZIP and a Windows CUDA executable, version 3.1.1.Read 5 Oct 2026 · stemroller.com
Instrumental
It creates an instrumental by mixing together all non-vocal stems.Read 5 Oct 2026 · stemroller.com
Linux support
Linux is not officially supported; the README gives manual dependency setup instructions for Linux.Read 5 Oct 2026 · github.com
Machine learning
The product is based on Facebook's Demucs machine learning research project.Read 5 Oct 2026 · stemroller.com
Open source
StemRoller describes itself as open source.Read 5 Oct 2026 · stemroller.com
Price
The maker describes StemRoller as totally free.Read 4 Oct 2026 · stemroller.com
Processing time
The GitHub README says stem splitting takes several minutes.Read 5 Oct 2026 · github.com
Song search
Users can search for a song by title and StemRoller finds it online.Read 5 Oct 2026 · stemroller.com
Stem separation
It splits songs into vocals, drums, bass, and everything else.Read 5 Oct 2026 · stemroller.com
YouTube
The project README says StemRoller integrates search results from YouTube.Read 4 Oct 2026 · github.com

Plans and prices

Free Free Free to use; makes vocals, drums, bass, other instrumental stems and an instrumental track Read 5 Oct 2026 · stemroller.com

Every StemRoller plan and price →

Strong points and limits

Strong points

  • Separates vocals, drums, bass, and other stems
  • Creates an instrumental mix from non-vocal stems
  • Searches for songs by title
  • Open source licensing options
  • Free plan costs nothing

Limits

  • Splitting takes several minutes
  • Batch processing is unavailable
  • Linux is not officially supported
  • No free trial

Who it suits

StemRoller suits musicians, karaoke makers, and other desktop users needing separated song parts. It runs on macOS and Windows and can be used free of charge.

Verdict

StemRoller provides four separated stems and an instrumental mix at no cost. Choose it if macOS or Windows support is sufficient and processing time is acceptable.

Where Specifiction places it

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