Lesson 5 · Vibe Coding

Build a Mini-App in Steps

Learn how to move from a rough idea to a polished little tool — with a clean workflow, stronger prompts, and a front-end-only build process that makes sense.

Step 1

Choose the idea

Start with a tiny app worth making.

Step 2

Define features

Keep the scope tight and sensible.

Step 3

Write the prompt

Tell the model exactly what to build.

Step 4–5

Design & refine

Shape the UI, then improve the result.

Interactive Build Flow

From rough idea to polished mini-app

Pick a sample app, move through the stages, and watch the concept become clearer, more structured, and more buildable.

Core principle

Don’t try to build “an entire platform”. Build one small thing that solves one obvious problem well.

Sample project

Mini-App Builder Walkthrough

Step 1 of 5
Live Output

Mini-app preview

Front-end only
preview.html
Why this works
  • It breaks the build into manageable decisions.
  • It stops vague prompting and reduces messy output.
  • It teaches scope, interface thinking, and refinement.
Best prompt habit

Ask for the app, the visual style, the interaction rules, the file structure, and the constraints all in one neat brief.

Good Vibe Coding Habits

What makes a mini-app prompt stronger?

The stronger prompt is usually not the longer one. It is the clearer one.

Be specific

Name the exact app, the exact purpose, and the intended user.

Define scope

Say what it must include and what it should deliberately leave out.

Describe the UI

Mention layout, colours, mood, responsiveness, and interaction style.

Refine after

Do not chase perfection on prompt one. Improve in passes.

Ready for the next lesson interaction?

Small apps. Clear prompts. Better outcomes.

This mini-site is designed to teach the mental model behind vibe coding: break the work down, prompt with intent, and refine with taste.