Terra Echo Studios
FISSURE app iconTerra Echo Labs

FISSURE

Stem splitter for your computer

Split any track into clean stems — vocals, drums, bass, and more. 100% offline, no subscription.

Get FISSURE
Free · Pay what you want
macOS — Apple Silicon & Intel
FISSURE app showing a track split into Drums, Bass, Other, and Vocals stems with BPM and key detection

FISSURE is an AI-powered stem splitter for your computer. Drop in any track and separate it into clean, usable stems in seconds — perfect for remixing, sampling, practicing, karaoke, or pulling a part out of a reference.

Everything runs locally on your computer. There is no upload, no account, and no subscription — your audio never leaves your computer, and the tool keeps working whether you are online or not.

A look inside

FISSURE app drag-and-drop screen with 4-stem, 6-stem, and vocal-priority separation modes
FISSURE app stem output with waveforms and drag-to-DAW export

Three ways to split

4-Stem

Vocals · Drums · Bass · Other

6-Stem

Adds Guitar and Piano for finer control

Vocal Priority

Cleanest possible vocal isolation

Built for your workflow

100% offline

All processing happens locally on your computer — no uploads, no servers, no account. Your audio stays yours.

Drag straight to your DAW

Split, then drag the stems directly into Logic, Ableton, Pro Tools, or wherever you work.

Auto BPM, key & bars

FISSURE detects tempo, musical key, and bar count automatically — ready to drop into a session.

Separation history

Revisit past sessions and grab stems again without re-processing.

How it works

01

Drop in a track

Drag any audio file into FISSURE — no import dialogs, no setup.

02

Pick a mode

Choose 4-stem, 6-stem, or vocal-priority depending on what you need.

03

Split & drag out

FISSURE separates the track on-device, then you drag the stems straight into your DAW.

Frequently asked

How much does FISSURE cost?

FISSURE is free — it is offered as "pay what you want" on Gumroad, so you can download it for free or chip in whatever you feel it is worth.

Does FISSURE work offline?

Yes. All processing happens locally on your Mac using an on-device AI model. Nothing is uploaded, and no internet connection is required after download.

Which Macs are supported?

FISSURE is a universal app that runs natively on both Apple Silicon (M-series) and Intel Macs.

What stems can it separate?

Choose 4-stem (vocals, drums, bass, other), 6-stem (adds guitar and piano), or a vocal-priority mode for the cleanest vocal isolation.

Is there a subscription?

No. Download it once and use it — no monthly fees and no per-track credits.

Try FISSURE

Free to download — pay what you want. Runs entirely on your computer.

macOS — Apple Silicon & Intel

Get FISSURE

By downloading, you agree to FISSURE's EULA and Privacy Policy.