Build Apps You Can
Understand

Flask + PostgreSQL + Vanilla JS
The simple, transparent stack for AI-assisted development

Start Learning Read the Manifesto

No build tools • No magic • Just code you can read

Meta: This site runs on Flask

42 KB page size 30ms TTFB Lighthouse 100 0s build time

Right-click → View Source. Real HTML. No hydration markers.

Why Flask Vibe?

In 2026, AI assistants write most your code. Simple stacks win.

Faster by Design

No build step. No hydration. No JavaScript bundle. Flask serves HTML directly — 1.8× faster LCP than Next.js. Real users, real speed.

AI Loves It

Claude, ChatGPT, and Copilot write reliable code with raw SQL and vanilla JS. No ORM hallucinations. No framework magic.

View Source Works

Right-click → View Source shows actual HTML. Find bugs in 30 seconds. Debug without source maps. Verify AI output instantly.

The Complexity Problem

Modern frameworks promised simplicity. They delivered complexity.

Next.js Setup

📁 node_modules/ (300MB)

📄 package.json (50 dependencies)

⚙️ next.config.js

⚙️ tsconfig.json

⚙️ .eslintrc

📁 .next/ (build cache)

🔧 webpack, babel, swc...

5 minutes to install. 10 minutes to build. Debugging? Good luck tracing through transpiled, minified, server-rendered React.

Flask Setup

📄 app.py (15 lines)

📄 requirements.txt (3 deps)

📁 templates/

📁 static/

That's it.

30 seconds to install. No build step. Refresh browser, see changes. What you write is what runs.

See Full Comparison

Start Learning

Practical tutorials. Real code. No framework magic.

intermediate 45 minutes

Modular Vanilla JS That Outperforms Frameworks

In 2026, properly modularised vanilla JavaScript — paired with AI tooling and native browser APIs — matches framework productivity while delivering smaller bundles, zero abstractions, and 100/100 Lighthouse scores. This tutorial shows you the full architecture: reactive state, component pattern, client-side router, and lazy loading.

Read Tutorial

beginner 30 minutes