The Brutalist
Early access · Made by an architect, for architects

From sketch to render — in seconds.

The Brutalist turns a hand sketch into a photorealistic render, for a faster and more precise concept design stage.

10 free renders · no card needed · runs in the browser

PlateA-001
SubjectSketch → Render
SequenceConcrete · Red · Night
StatusRendered in-app
No tricks

The whole loop, for real.

A real session, recorded in the app: drop in a sketch, hit Generate, get a photorealistic render in full 2K. Sixteen seconds, uncut speed-up.

PlateA-002
SubjectLive session
Duration16 s · sped up
Output2048 × 2048
Studies

Your lines are never redrawn.

The drawing is the base — the AI follows your sketch, it never invents a different building.

Hand-drawn architectural sketchThe same sketch as a photorealistic render
Study01
LeftSketch
RightRender
EditedIn-app only
Hand-drawn architectural sketchThe same sketch as a photorealistic render
Study13
LeftSketch
RightRender
EditedIn-app only
See all studies in the gallery →
Process

How it works

  1. Start your sketch

    Import a photo of a paper sketch, paste a 3D model view from SketchUp or Rhino, or draw the massing with the pen.

    Start your sketch
  2. Generate

    Tap Generate — a photorealistic render appears in about 20 seconds, in the same proportion as your sketch.

    Generate
  3. Iterate

    Adjust the drawing and generate again until the massing and viewpoint are right.

    Iterate
  4. Annotate if it misreadsoptional

    If the AI doesn’t follow your drawing, add a note in blue — write it by hand or type it. It reads the instruction but doesn’t draw it.

    Annotate if it misreads
  5. Reinforce the geometry

    Firm, clear lines keep it faithful — the sketch is always the master. Strengthen the shape and angle by drawing the lines you want.

    Reinforce the geometry
  6. Pin a direction

    Once the geometry and angle are right, tap the pin to hold that look and generate similar takes.

    Pin a direction
  7. Refine with the lasso

    Happy with it? Circle an area with the lasso and write the change in red — by hand or typed — a new finish, an object, a detail. Only that part updates; the rest stays exactly as it was.

    Refine with the lasso
  8. Or change the whole scene

    Write a red “#” note on its own — no loop — to restyle the whole image: time of day, weather, material, mood (e.g. #sunny day, #night).

    Or change the whole scene
  9. Download your render

    The whole image updates to match your note. When it’s the one, download it — in 2K.

    Download your render
Instruments

Your tools

Pen
Black lines — the building. Tap it again to set thickness.
Blue pen
Notes on the sketch — write by hand or type them; read, never drawn. They steer the geometry. A “#” note sets the scene; “#interior” / “#isometric” changes the view.
Type
Prefer the keyboard? Tap the T, then type your note instead of writing it — handy on desktop, or when handwriting is hard to read. It lands in the tool’s colour: blue on the sketch, red on the render.
Eraser
Removes pen and blue strokes. Erases at twice the pen width.
Generate
Render the sketch — about 20 seconds, in the same proportion as your drawing.
Edit the render
Refine finishes — circle an area on the render and write the change in red, by hand or typed (material, colour, people, weather). Only that part updates; a “#” alone restyles the whole scene.
Pin
Hold the look and keep generating — close variations, never the same image, until it’s the one.
Download
Save the render to your device, upscaled to 2K.
Swap
Flip the sketch and render panels left/right.
Import
Load a photo of a paper sketch (its text won’t show), an image file, or paste a screenshot straight from your clipboard — even a 3D model view from SketchUp, Rhino or Revit.
Craft

Get faithful results

Cleaner lines, closer render

Loose scribbles leave room for the AI to improvise. Firm, deliberate lines keep it faithful.

Draw the viewpoint you want

It obeys the perspective and camera angle in your sketch — so set the view by how you draw it.

Thick lines are walls; empty stays empty

Bare areas render as plain concrete or ground. Nothing is invented where you didn’t draw it.

People & nature only if you draw them

Figures and trees render as real, living things — but only when they appear in the sketch.

Notes are direction, not drawing

Blue on the sketch, red on the render — the AI applies your notes but never draws them. A “#” sets the whole scene; arrows and words target a spot.

It’s a massing study

Fast concept exploration — not a line-for-line trace or a final visualization.

A fast concept tool — not a final visualization. Explore massing and ideas instantly, then take the direction into your full pipeline.
Privacy

Your work stays yours

Your sketches and renders are never stored on our servers. They live only in your session — discard a render or close the app and it’s gone for good. The only copy that exists is the one you choose to download to your own device.

Ten renders on us

Draw something.

Open the app →Free to start — no card, no install.