See the air. Feel the speed.

See the invisible

The hidden magic behind every fast car.

Every time a sports car moves, the air bends, races, and breaks around it. You feel it on the road. Here you finally see it — flowing in real time, in color, in the palm of your hand. The forces that make speed beautiful, revealed.

One finger, full control

From a standstill to 400 km/h.

Drag the speed up and watch the air tear faster and wilder the harder you push. Raise the rear spoiler and see the air answer. The thrill of acceleration — on demand, any time, no track, no ticket.

Moving art

Not a chart. A living thing.

Flowing lines. Heat-mapped color. A wake that ripples behind the car like the real thing. The kind of thing you leave running on your desk between meetings, just because it looks that good.

Quietly serious

Real airflow under the surface.

Honest physics drives every frame — but you never have to think about it. No menus full of numbers. No homework. Just the air, made visible, and the quiet confidence of something built exactly right.

What you watch is a calculation finding its answer. The app solves the equations of moving air thousands of times a second, and every pass corrects the one before it. The opening moments are a first approximation; as the passes build up, the picture settles into what the air truly does — like a photograph developing, rough at first and then unmistakably real.

Beyond the car — the canonical cases

Three textbook flows, solved live in your hand.

The car is where it starts. Behind it sits a small laboratory of the cases every aerodynamicist learns first — a cylinder, an airfoil, a nozzle. The same solver runs each one in real time, so you are not looking at a textbook diagram. You are watching the physics happen.

Lab — the cylinder

A bluff body, and the rhythm it leaves behind.

Set a plain circular cylinder in a steady stream and the flow refuses to stay quiet. Past a certain speed it cannot follow the back of the body, separates, and sheds vortices — first from one side, then the other, in a patient alternating beat. The trail of swirls drifting downstream is the von Kármán vortex street, the same mechanism that makes power lines hum and chimneys sway.

What makes it instructive is that it is exact and repeatable: at this Reynolds number the wake is laminar and the case is a known benchmark, so you can read the shedding rhythm straight off the screen and trust it.

Lab — the airfoil

Where lift actually comes from.

Tilt an airfoil into the stream and the air does the work of flight: it speeds up over the top, slows beneath, and turns downward as it leaves the trailing edge. That turning is lift — not a trick of shape but a measurable force, and here you watch the flow field that produces it bend around the section in real time.

Raise the angle of attack and the picture answers. The numbers track alongside, so the link between what you see and what the wing feels is never abstract: more angle, more turning, more lift — until the flow can no longer hold the surface.

Lab — the nozzle

How a narrowing pushes the flow faster.

A converging–diverging nozzle — the de Laval shape behind every rocket and wind tunnel — trades pressure for speed. The stream squeezes through the throat, accelerates, and the color map lifts from cool to bright as it goes. It is the cleanest way to see a principle that runs through all of fluid dynamics: where the passage narrows, the flow must hurry through.

Watching it settle, you see the velocity build smoothly along the centreline and the field organise itself around the throat — the same logic that shapes intakes, diffusers, and the air paths inside the car.

Yours

No account. No subscription. No catch.

It runs entirely on your device and it's yours to keep. The legendary flat-six silhouette, alive with motion, wherever you are.