Choose your own app: a personal dashboard, expense tracker, or client portal. You'll build it, polish the production details (error handling, loading states, mobile design), deploy it, and finish with an honest assessment of where vibe coding excels and where it falls short.
Pick Your App
Choose one. Build the one that would actually be useful to you — you're more motivated when it's real.
Build a personal dashboard as a single HTML file.
Widgets:
- Clock with current time and date
- Weather widget (use OpenWeatherMap API, my key: YOUR_KEY)
- Top 5 news headlines (use NewsAPI, my key: YOUR_KEY)
- Daily goals tracker: add goals, check them off, they reset each day
- Quick notes: type a note and save it (localStorage)
- A "links" widget: pinned URLs I click often
Design: dark theme, card-based layout, 3-column grid on desktop.
Smooth and fast — no unnecessary animations.Build a full-stack expense tracker (Node.js + Express + SQLite).
Features:
- Log an expense: amount, category (Food/Transport/Entertainment/Bills/Other),
description, date
- Summary cards: total this month, total this week, average per day
- Spending by category: a simple horizontal bar chart (pure CSS, no Chart.js)
- Monthly view: list all expenses for a selected month, grouped by date
- Export to CSV button
- Budget feature: set a monthly budget, show how much is left with a progress bar
Design: clean and minimal, mobile-first.Build a client portal for a freelancer (Node.js + Express + SQLite).
Features:
- Projects list: each project has a name, client name, status
(Active/Completed/On Hold), and due date
- For each project: task list with status tracking
- Time tracking: log hours spent on each project
- Invoice generator: calculate total hours × hourly rate, generate a simple HTML invoice
- Simple login (single hardcoded password to protect the portal)
Design: professional, navy and white, like a real SaaS app.The Production Polish Pass
The difference between a prototype and a product is in the details. After your app works, run through this polish checklist with prompts:
# Error states
Add proper error handling. If an API call fails, show a user-friendly
message (not a JavaScript error). If a form is submitted with empty
required fields, highlight the missing fields in red.
# Loading states
Add loading states everywhere data is being fetched or saved.
Use skeleton placeholders (animated gray boxes) while content loads.
# Empty states
Add meaningful empty states. If there are no items yet, show an
illustration (simple SVG is fine) and a helpful prompt to add the first item.
# Mobile
Test on a 375px wide viewport. Fix any elements that overflow,
text that's too small, or buttons that are hard to tap.
# Performance
Add a meta viewport tag, optimize the CSS to remove unused rules,
and make sure there are no console errors.Deploying to Production
For the dashboard (static HTML): use the Netlify Drop method from Day 2.
For the expense tracker or client portal (Node.js backend): Replit hosts it for you — just click "Publish" and share the URL. For a more permanent home, use Railway.app or Render.com — both have free tiers and can deploy a Node.js app directly from your code.
Railway deployment: Connect your GitHub repo (or paste your code), click Deploy. Railway detects Node.js automatically, runs npm install and npm start, and gives you a public URL. Free tier includes 500 hours/month.
When Vibe Coding Works — and When It Doesn't
After building 5 apps this week, here's an honest take:
Vibe coding works well for
- Prototypes and MVPs you need fast
- Internal tools you'll use yourself
- Proof-of-concept demos
- Static sites, landing pages, portfolios
- Apps with well-defined requirements
- Gluing together existing APIs
Vibe coding struggles with
- Production apps with 10,000+ users
- Complex state management at scale
- Security-critical code (auth, payments)
- Performance optimization
- Large multi-person codebases
- Novel algorithmic problems
The tools are improving fast. What vibe coding can't handle today, it may handle by the end of 2026. But right now: use it for speed, use it for exploration, use traditional engineering discipline when stakes are high.
What to learn next
If you want to go deeper, the highest-leverage skills to add to vibe coding:
- Git — Version control so you can undo AI mistakes safely
- SQL basics — Understanding what's in your database and how to query it
- HTTP / REST — How APIs actually work so you can debug them
- Prompt engineering — Better prompts = better code. Take our ChatGPT Power User course next.
Day 5 Complete
- Built a complete, polished, production-ready app from scratch using vibe coding
- Added proper error states, loading states, and mobile responsiveness
- Deployed a live application to the internet
- Understand clearly where vibe coding excels and where it has limits
- Have a roadmap of what to learn next
Course Complete.
You built 5 real apps in 5 days using nothing but natural language. That's vibe coding. Where you go from here is up to you.