Day 85 of #100DaysOfCode — Building a Mini Flask App: Expense Tracker

📰 Dev.to · M Saad Ahmad

Learn to build a mini Flask app for expense tracking in 5 minutes

beginner Published 28 Apr 2026
Action Steps
  1. Create a new Flask project using the command 'flask new' to initialize the directory structure
  2. Build a simple expense tracker model using Python classes to store and manage expenses
  3. Configure routes for the Flask app to handle user input and display expenses
  4. Run the Flask app using 'flask run' to test the application locally
  5. Test the expense tracker by adding, viewing, and deleting expenses to ensure functionality
Who Needs to Know This

Software engineers and web developers can benefit from this tutorial to quickly build a simple web application for personal or client use. It's also useful for DevOps teams looking to automate expense tracking.

Key Insight

💡 Flask is a lightweight and flexible framework for building web applications quickly

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🚀 Build a mini Flask app for expense tracking in 5 minutes! 🕒️

Key Takeaways

Learn to build a mini Flask app for expense tracking in 5 minutes

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Flask learning is done. Today I built a complete mini Flask application from scratch: an expense...
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