How to Use DeepSeek to Code a Web App for Free (Python/JS)

How to Use DeepSeek to Code a Web App for Free (Python/JS)

Indian developers are harnessing DeepSeek’s AI power to build fully functional web apps—without spending a rupee on APIs or tutorials. From Bangalore startups to Delhi freelancers, coders are deploying Python/JS apps 5x faster using plain English prompts. Here’s your blueprint to turn ideas into products, for free.

Why DeepSeek Beats Traditional Coding

• Zero Cost: Free API tier (vs. GPT-4’s ₹15,000/month minimum).
• Indian Context: Understands prompts like “Build GST calculator for Hindi users”.
• Full-Stack Ready: Generates Flask/Django backends + React frontends.

What You’ll Build

By the end, you’ll have a live task management web app with:

1. Python backend (Flask) with REST API.
2. React frontend with responsive UI.
3. Free hosting on Vercel/Heroku.

New to AI coding? Start with our beginner’s website guide.

Step 1: Generate Backend Code with DeepSeek

Prompt to create a Flask API for tasks:

“Write Python Flask code for a task manager API with: – GET/POST endpoints for tasks – SQLite database – CORS enabled for React frontend. Include error handling and comments.”

Sample Output:

from flask import Flask, jsonify, request
from flask_cors import CORS

app = Flask(__name__)
CORS(app)
tasks = []

@app.route('/tasks', methods=['GET'])
def get_tasks():
    return jsonify(tasks)

@app.route('/tasks', methods=['POST'])
def add_task():
    task = request.json
    tasks.append(task)
    return jsonify({"message": "Task added!"}), 201

Step 2: Build the React Frontend

Prompt for a responsive UI:

“Create a React component for a task manager with: – Form to add tasks – List to view/delete tasks – Bootstrap styling. Use functional components and hooks.”

Pro Tip: Debug with DeepSeek

Paste error logs into DeepSeek for instant fixes:

“Fix this React error: ‘Cannot update unmounted component’.”

Case Study: Hyderabad Dev Launches SaaS in 3 Days

Freelancer Arjun Mehta used DeepSeek to build “TaskMate”, a project management tool:

• Generated 90% of Python/JS code with DeepSeek.
• Monetized on Gumroad (₹50,000+ in first month).

Limitations & Workarounds

• Complex Auth: DeepSeek may oversimplify OAuth. Use Firebase Auth instead.
• Database Scaling: For high traffic, switch to PostgreSQL.

Deploy Instantly (Free Options)

1. Backend: Deploy Flask app on Heroku.
2. Frontend: Host React on Vercel/Netlify.
3. Database: Use Supabase’s free tier.

Monetization Strategies

• Sell source code on Gumroad (₹5,000-10,000/project).
• Offer customizations to local businesses.