ChromaStack

All you need is LUT.

ChromaStack is the math-correct LUT editor for colorists. Open any LUT, disassemble it, rebuild it on a non-destructive layer stack, and ship a clean, production-ready result.

Buy ChromaStack Download free demo

macOS 14+ · Apple Silicon or Intel.

Features

Smooth any LUT — or turn it inside out.

Repair a client supplied LUT, create unique looks. Every step is live, non-destructive, and reorderable.

  • Realtime

    A live Metal viewer redraws the lattice as you work — no waiting, no baking.

  • Many unique operators

    23 operators — splits, fits and smoothing you won't find anywhere else.

  • Non-destructive stack

    Reorderable layers, each live, with a universal Mix against the source.

Layer-stack editing

Non-destructive operators, reorderable top-to-bottom, each one live. Mute, tune, or remove any step. A universal Mix slider blends the whole result against the source — never bake down until you export. Every step carries a universal Mix against its input. Save your stack for future reference.

Live cube + image preview

A real-time Metal viewer shows the lattice, grey axis, and displacement flow lines as you work. See your LUT in RGB or Lab representation. Drag in your own images, or designate your folder with test images.

Unique operators

Randomise, reverse, or export to DCTL via the Sine Fit operator — tools that go well beyond plain format conversion.

Split operators

Decompose any LUT into luma and chroma. Clean the tone curve and colour independently, then recombine.

Lattice-aware smoothing

Gaussian, spline, thin-plate, curvature-flow and hull-aware passes that respect the lattice instead of mushing it — fix banding and noise without flattening the grade.

Exports everything

Write every working format — .cube, .3dl, .lut, .vlt, or CSHALD — or fit a continuous DCTL straight from a hand-graded look.

Continuous DCTL export

The Sine Fit operator fits a continuous sine/DCT basis to your look and writes a .dctl — a resolution-independent transform you can drop straight into DaVinci Resolve.

Batch convert a whole folder

Point ChromaStack at a source folder and write the results to a target folder.

Operator Reference — all 23 operators, documented →

Operator Reference

23 operators. One stack.

The full reference — every parameter, with tips — is built right into the app. Here's the whole library at a glance.

Transform

  • Invert
  • Reverse
  • Randomize
  • Clamp
  • Resize

Split — Curves

  • Extract Curves
  • Extract Chroma (Curves)

Split — Luma

  • Extract Luma
  • Extract Chroma (Luma)

Smoothing

  • Gaussian Smooth
  • Smart Smooth
  • Curvature Flow
  • Lattice Relaxation
  • Median Filter
  • Luma Curve Smooth
  • Poly Curve Smooth
  • Sine Curve Smooth
  • Spline Smooth
  • Untangle Smooth
  • Hull Smooth
  • B-Spline Approx
  • Thin-Plate Spline
  • Sine Fit

Pricing

One purchase. Yours to keep.

The demo is the whole app — licensing only changes what you can export.

Free demo

€0

Download the free demo and use the full editor on your own LUTs. 3D export capped at 16³; DCTL export off.

Download demo

Licensed — ChromaStack

€69,-

One-time purchase. Unlocks full-resolution 3D export (to 128³) and continuous .dctl. Updates included.

Buy ChromaStack

Demo vs licensed

What you get Free demo Licensed
Open & inspect any 1D / 3D LUT ✓ ✓
Full layer stack & all 23 operators ✓ ✓
Live cube + image preview, grey-axis plot ✓ ✓
Batch convert / resize folders ✓ ✓
Export 1D LUTs & low-res 3D Up to 16³ ✓
Export full-resolution 3D LUTs (to 128³) — ✓
Continuous .dctl export (Sine Fit) — ✓
CSHALD-8 identity export ✓ ✓
Future updates ✓ ✓

FAQ

Questions, answered.

How is the app delivered?

Download from this site. After purchase we email you a licence key for activation.

Is payment secure?

Checkout runs on Polar, our merchant of record. They handle payment, VAT/sales tax, and your receipt. We never see your card details.

How does the license work?

Your purchase includes a license key. Enter it in ChromaStack → Settings → License to unlock full-resolution and DCTL export. All 23 operators are available in the demo and licensed builds alike.

Refunds?

Because there's a free demo, try before you buy. If something's wrong, see our refund policy or email support.

System requirements

Runs where you grade.

  • OS macOS 14 Sonoma or later
  • Chip Apple Silicon or Intel Mac
  • Delivery Direct download · license key by email