Vibe code and
understand it all

Every JavaScript concept becomes visual. Watch forms create data balls, see them flow through pipes, build functions in boxes, save data in containers. Build apps like playing with colorful building blocks.

Powered by Vinci
Imagine seeing your front end on the left and visualised code on the right
Built with Vinci

We loved Vinci so much, Lancy.ai was built using it too

Here's both the front-end and back-end, side by side

Front-end
↓
Back-end
↓
Join the Waitlist

Watch Your Signup
Get Stored Live

See exactly how your data flows through the system. No black boxes.

You're on the list!
{ }
Input
📝
Signup Form
Leo
⚙️
Create User
📦 Waitlist DB
Output
📧
Welcome Email

The black-box problem

Vibe coding platforms like Cursor, Replit Agent, and Lovable hide their logic. You prompt, they generate, and you hope for the best.

📜

1000s of lines you can't parse

Complex logic buried in endless files. Good luck finding where things break.

🔮

Output only, no visibility

You see what went in. You see what came out. Everything in between? A mystery.

🏓

Prompt ping-pong, no progress

Hours spent debugging with AI. Back and forth. Still stuck. Sound familiar?

The Solution

Make Every Step Visible

Build visually, export real code. Lancy (powered by Vinci) turns every operation into an animation you can see and verify—data as balls, logic as Leos, flows as Actions.

↳ Learn more

From <code> to Visual

Every line of JavaScript becomes something you can see, touch, and understand

STEP 1
Data becomes a Ball
Your JSON Data
{
  "user": {
    "name": "Sarah Chen",
    "email": "sarah@company.com",
    "age": 25,
    "role": "engineer"
  }
}
Becomes a Ball
👤
Sarah Chen
age: 25
STEP 2
Transform data with Set Fields
FieldWriteLeo
// Leo = 1 atomic operation
FieldWriteLeo.execute(ball, {
  field: "user.age",
  value: 30
});

// Result:
ball.data.user.age = 30;
Set Fields Action
✏️ Set Fields
👤
age: 25
Before
⚡
age = 30
👤
age: 30
After
STEP 3
Conditionals become Branch Actions
JavaScript IF Statement
if (user.age >= 18) {
  // Take the "adult" path
  showAdultContent();
} else {
  // Take the "minor" path
  showKidsContent();
}
Branch Action
🔀 Branch
Condition
user.age >= 18
TRUE
Adult Path
FALSE
Kids Path
💡 Ball flows to green or red port based on condition