| What it does | Free, open-source, node-based audio routing for macOS, Windows and Linux
| AI stem splitter that separates songs into vocals, drums, bass, guitar, piano and other instruments
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Open source
| Freemium
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| Pricing | Free. Source code available under MIT license on GitHub.
| Free: 5 credits on sign-up (one song up to 5 minutes). Starter: $7.49 for 100 credits (about 25 songs of 4 minutes at 1 credit per minute). Studio: $44.99 for 750 credits (about 187 songs). Pro: $169.99 for 3,000 credits (about 750 songs). Most tools use 1 credit per minute; the 4-Stem Best Quality
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| Key features | - Node-based audio routing graph
- Unlimited virtual audio devices
- System audio and per-app audio capture
- Microphone capture with noise suppression, gate, compressor and EQ
- CLAP, AU and VST3 plugin hosting
- Multi-format recording including WAV, FLAC, AIFF, Opus, MP3, AAC
- Audio streaming over network via WebRTC and UDP
- Real-time resampling between different sample rates
| - Split songs into 6 stems: vocals, drums, bass, guitar, piano and other instruments
- Further split any part: drums into kick, snare, hi-hat, toms, ride and crash; vocals into lead and backing
- Every-instrument split separates about 50 kinds of instruments
- Works entirely in web browser, no installation needed
- Support for MP3, WAV, M4A and FLAC files up to 10 minutes
- Processing takes 1 to 3 minutes per song in the cloud
- Download stems as 320 kbps MP3 files
- Free MP3 to MIDI and Audio to MIDI conversion in browser
- Songs and splits saved in account for 30 days then deleted automatically
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| What makes it different | - Works on macOS, Linux and Windows with the same node graph approach
- No kernel extension required on macOS
- Open source under MIT license with full source code on GitHub
- Includes built-in effects and supports third-party VST3, AU and CLAP plugins
- Can record while routing audio in real time to multiple formats
| - AI models trained on thousands of separated recordings for clean, remix-ready stems
- One-time credit purchases that never expire, no subscription required
- Free MIDI conversion using Spotify's open-source Basic Pitch model
- Songs not used to train AI models, processed in the cloud with 30-day automatic deletion
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| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | 17 ● no change since last check | Not checked yet ● no change since last check |
| Trust Flow (Majestic) | 8 | 0 |
| Citation Flow (Majestic) | 16 | 0 |
| Referring domains (Majestic) | 13 | 0 |