Real-Time AI · On Your Mac
Play music in any app. Gecko captures the audio live and instantly splits it into stems — so you can jump in and play along.
Live Stem Separation
Open Spotify, Apple Music, YouTube — whatever you play, Gecko captures it and separates it into six clean stems using on-device AI. No internet. No uploads. Just hit play.
Modes
Capture a song and work with it as a full project. Set loop points, rearrange stems, and rehearse at your own pace.
Drop in a folder of songs and let Gecko process them all. Export clean stems as WAV, FLAC, or M4A.
Load any Audio Unit plugin directly on a stem. Your signal chain, your sound.
A-B Loop
Mark any part of the song and loop it endlessly. Slow down a tricky passage, focus on one bar, and get it right before moving on.
Transpose & Time Stretch
Shift the key to match your instrument. Slow down without changing pitch. Detect tempo automatically — all in real time.
Pricing
Free
No credit card · No subscription
Requires macOS 14.4 or later · Apple Silicon
Pro Bundle
One-time · No subscription
Also available as individual add-ons