Free per-app volume control for macOS with real VU meters, no audio driver required
AI stem splitter that separates songs into vocals, drums, bass, guitar, piano and other instruments
Stage
Not given
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Founded
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Based in
DE
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Pricing model
Free
Freemium
Pricing
Free
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
Key features
Per-app volume sliders and mute controls
Real VU meters per app and master
No audio driver installation required
Output device switcher for speakers, AirPods, and audio interfaces
Hide specific apps from the volume control list
Drag-to-reorder app arrangement with persistent settings
Automatic per-app level memory across sessions
In-app self-updating mechanism
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
What makes it different
Free solution to a macOS gap that Windows provides natively
No system audio driver installation required
Real analog-style VU meters rather than decorative animations
Part of a complete free Adelvo audio toolkit
Fully signed and notarized for security
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
AppVol
Unmix Studio