A polysynth by Lost Synapse · a one-person studio

Laura. Fractal oscillators, wavetables, and a mod matrix that gets out of the way.

A synth for sound designers who'd rather not learn another ecosystem. Four engines under one signal path, and one button to roll the dice when inspiration is late.

Buy Laura · $69
Format · AU · VST3 Platforms · macOS · Windows License · One-time, lifetime Telemetry · None
Laura polysynth screenshot: two fractal oscillators (Mandelbrot, Julia), envelope, modulation matrix, Filter+ and FX panels.

What's inside

Built for the patch you'll keep, not the spec sheet you'll forget.

Four engines, drawn together

Wavetable, FM, classic analog (saw, square, triangle, sine, pulse), and fractal oscillators (Mandelbrot, Julia, Burning Ship, Tricorn, Multibrot, Newton), paired across two oscillator slots with full per-voice routing. Switch engines without losing your patch.

A modulation matrix that thinks in shape

Six envelopes, four LFOs with editable shapes, and a macro layer that combines sources before they reach a destination. Curves, not just knobs.

Filter+ with character, not just slope New

Pre-filter drive (Tube, Tape, Diode, Fold), a series HP for carving the low end, and a Lost Synapse character pack tuned to taste. The filter is now an instrument of its own.

An FX rack that knows when to stop

Chorus, delay, distortion, phaser, flanger, and twelve more. Tasteful by default, generous when you ask. The DICE button rolls a curated rack alongside the patch, so a sketch is one click away.

Convolution reverb, with your IRs

Drop your own impulse responses. Embed them in the preset. Take them with you. No third-party engine to license.

Wavetable waterfall, in 3D

Browse, edit, and audition wavetables in a real-time 3D view. Find the frame you actually want, not the closest octave to it.

Lifetime license, no strings

Buy it once. No subscription, no telemetry, no cloud. The license verifies offline, so Laura runs fine on an air-gapped machine. Your saves are your saves.

Wavetable editor

A full editor, not a preset picker.

Draw frames by hand, import a WAV, or type a formula like sin(tau*x) and watch it land. Brushes for sine, pulse, noise, hills, and step shapes. Per-frame, per-range, or per-table operators. NORM, SMOOTH, PHASE, SYNC, QUANT, LP, HP, FM, MIRROR, ASYM, SALIGN. Audition live, A/B against the original, embed the table in the preset so the patch travels with you.

Up to 256 frames. Real-time edits, clickless. The kind of editor you'd expect to pay extra for, included.

Laura's wavetable editor — 16 of 256 frames, formula box, brushes panel, per-frame operators.

What's new

Recent updates.

Laura grows in small, real steps. Here are the last three.

    • Four pre-filter drive modes: Tube, Tape, Diode, and Fold.
    • Series highpass for carving the low end without losing the shape.
    • A Lost Synapse character pack with curated filter colors, tuned by ear.
    • Manual now has dedicated chapters for Filter+ and the wavetable editor, with bundled screenshots.

    Read the full notes →

    • New standalone app icon and refreshed hero screenshots.
    • Voice icon weight matched to the rail. The update banner no longer lingers after a fresh build.

    Read the full notes →

    • Download a no-license demo straight from the site, framed around the experience, not the binary.
    • License revocations are now signed end-to-end, including refunds via Lemonsqueezy.
    • Build pipeline tightened so macOS releases stop choking on parallel link.

    Read the full notes →

All updates →

Frequently asked

Common questions.

What formats does Laura support?

Laura ships as AU and VST3, on macOS and Windows. Both formats and both platforms are included in a single $69 purchase.

Is Laura a subscription?

No. Laura is a one-time purchase. Your license is lifetime and comes with two years of free updates, new FX modules, and preset packs.

Does Laura have a free demo?

Yes. The demo is fully featured for 30 minutes per session, then plays a quiet noise burst every 30 seconds until you activate. You can download it without an account.

Does Laura phone home or collect telemetry?

No. There is no telemetry and the license verifies offline, so Laura runs fine on an air-gapped machine.

Can I use Laura on multiple computers?

Yes. The license is portable. Install Laura on as many of your own machines as you need and drop the same .lic file onto each.

What synthesis engines are inside Laura?

Four engines under one signal path: wavetable with a full built-in editor, frequency modulation (FM) with two operators, classic analog-style oscillators (saw, square, triangle, sine, pulse), and fractal oscillators (Mandelbrot, Julia, Burning Ship, Tricorn, Multibrot, and Newton).

Does Laura include a wavetable editor?

Yes. The built-in editor lets you draw frames by hand, import WAV files, or type a formula like sin(tau*x). It supports up to 256 frames, with brushes, per-frame operators, and live preview.

Can I get a refund?

Yes. There is a 14-day refund policy. Reply to the license email and the refund is processed without a form.

Launch pricing

A fair price for an instrument that keeps growing.

Laura is under active development. Your purchase comes with two years of free updates. New FX modules, preset packs, DSP refinements, and design polish all ship in every build, not as a moving roadmap you'll have to pay for again.

Limited time
$149 $69

USD · one-time · lifetime license

  • Lifetime license to Laura. Never expires.
  • 2 years of free updates. New FX modules, preset packs, and DSP refinements as they ship.
  • Design that keeps maturing. Every build sands an edge off the GUI.
  • Both formats: AU and VST3, included.
  • macOS and Windows in one purchase.
Buy Laura
  • Instant delivery. License arrives by email within minutes.
  • No subscription, ever. The price you pay is the price.
  • License verifies offline. Works fine on an air-gapped machine.
  • No telemetry.
  • 14-day refund. Reply to the email, no forms.