WEEVIL Beat Expander is available on the Mac App Store. View it there.

Now available on the Mac App Store

Make loops stop
sounding like loops.

Weevil Beat Expander is an intelligent waveform chop and rearrange tool. Give it four beats. Get sixteen beats of controlled, evolving rhythm back.

View in Mac App Store See how it works

Native macOS app · Works with any drag-and-drop DAW · MIDI not required

WEEVIL Beat Expander 1.0.1 showing four generated loop sections and an exported result

FOUR BEATS IN.

SIXTEEN OUT.

ENDLESS DIRECTIONS.

A smaller way to work

Find the part worth keeping.
Then push it further.

Weevil works in four-beat sections so every decision stays musical, fast, and easy to curate.

01

Feed it a loop

Drop in four beats—or let Weevil divide a longer idea into four-beat sections.

02

Hear four possibilities

Weevil creates four rhythmically grounded variations you can audition together.

03

Choose what evolves

Select the section with the right energy, then bounce and regenerate from it.

04

Drag it into your DAW

Take the full sixteen beats or pull individual sections straight into your session.

The shipping app

Real workflows.
Real output.

These are current screenshots of WEEVIL Beat Expander 1.0.1—capture, protect, generate, shape, and export without leaving the app.

Record system audio and select a beat with tempo detection and transient snapping
Capture without detoursRecord Mac audio, detect tempo, zoom, snap, and choose the exact phrase to load.
Protect selected areas of a loop before generating variations
Keep what already worksProtect the parts that must remain intact while the rest of the phrase evolves.
WEEVIL Build Lab generating a synchronized snare build
Builds when the loop needs oneOpen Build Lab, shape the energy curve, and create synchronized audio and MIDI.
WEEVIL Build Lab exporting MIDI files to Finder
Take the source with youExport audio and MIDI into a named project folder, ready for the next stage in your DAW.

Available now for macOS

Put your loops to work.

WEEVIL Beat Expander is available worldwide on the Mac App Store.