UndoLooper — The Verse/Chorus Looper

Now free. Built for live performance, not just the studio.

UPDATE: v.1.2.3
Bug fixes and live looping latency optimizations.

Every live looper hits the same wall: you build a massive arrangement layer by layer, the chorus is huge, the crowd is with you — and then it's time to drop back into a verse. You can't. Standard loopers give you one undo, maybe. Your song becomes a static wall of sound with nowhere left to go.

UndoLooper fixes this with unlimited undo and redo, designed as live performance tools — not "oops" buttons.

Undo and Redo Are Your Verses and Choruses

Most loopers treat undo as a way to fix mistakes. UndoLooper treats it as the heart of your arrangement.

Build your full chorus: rhythm guitar, body percussion, bassline, lead lines, harmonies. That's your chorus state.

Now hit undo, undo, undo. You're back to just the acoustic guitar and a kick. That's your verse.

Perform the verse. Then redo, redo, redo — and the whole band slams back in. Massive chorus. Crowd loses it.

That's not jamming. That's arranging a song live, on stage, in real time. Verse to chorus and back. Intro, breakdown, drop, bridge, outro. Your performance history becomes your song structure.

This isn't a feature for studio noodling. It's built for the stage.

Why Other Loopers Fail Live Performers

I've gigged with the Boss RC-505, the EHX 45000, the Pigtronix Infinity, the TC-Helicon VoiceLive. They're excellent at building one big wall of sound. But:

• One undo, maybe two. You can't deconstruct a song.
• Long-presses everywhere. Stop, clear, mode-switch — you're tap-dancing when you should be playing.
• Harsh stops. They cut audio mid-note. It sounds amateur.

UndoLooper is one-press-one-action. Unlimited history. Zero performance long-presses (the only long-press is a deliberate clear, so you can't accidentally nuke your loop mid-song).

Performance Shortcuts

• Back 5 — drop the energy fast. One click peels back five layers. Perfect for jumping straight from a full chorus into a stripped verse without tap-dancing.
• Bring It Back — instantly restores your biggest recent loop state. Solo breakdown back to a ten-layer finale in one click.

Free vs. Paid

UndoLooper is completely free to download and use. No demo timer. No nag screens. The full live performance engine — unlimited undo/redo, the performance shortcuts, VST3 plugin and standalone app — all free.

The paid upgrade unlocks:

• Save & load .undoloop files — capture your full performance including every undo/redo state. Build setlists of pre-layered loops. Share with collaborators. Study how other players arrange. Also load and mp3, wav, or audio file.
• Echo Stop — a carefully manicured musical fade tail when you stop. No harsh cuts, just smooth, professional endings.
• 60-second base loop — extended base loop length for longer-form arrangements.

What's New in This Build (Windows)

What's in 1.2.2 vs 1.2.1

Quick changelog of everything since the last installer:

• Bevel-sized click areas for REC/PLAY, UNDO, REDO, STOP (entire stomp-button face is clickable, not just the text)
• CLEAR button — one-click clear (alternative to holding STOP 2 s); MIDI-learnable; persisted in plugin state
• Audio file import in LOAD LOOP — WAV / MP3 / AIFF / FLAC / OGG, auto-resampled, capped at 60 s
• .undoloop file association in Windows Explorer + auto-load on double-click
• Embedded pedal icon on the Standalone .exe and shortcuts
• Echo Stop relocated to a single row under Save/Load on the left side
• BringBack LED nudged 15 px left so it no longer crowds the text
• Status display — true ink-bounds measurement; text now actually fills the LCD rectangle vertically, with horizontal scale capped at natural proportion so short words like REC/DUB don't get stretched and long words like ALL BACK compress to fit
• Knob placement — symmetric around plugin centerline (158 / 400 / 642)
• Keyboard learn (Standalone only) — right-click a button, press a key, that key now triggers the button. Persists in session state. DAWs are unaffected.

Try It

UndoLooper runs in any VST3-compatible DAW (Cubase, Ableton, FL Studio, Studio One, Bitwig, REAPER, Reason, Digital Performer) or standalone. The audio engine is built from scratch to run smoothly on older computers using ASIO — you don't need a $3,000 rig to perform live confidently.

Download it. Load it up. Try arranging a song live instead of just stacking layers.

That's the difference.

— Ryan