Built an Automated WhatsApp Bot for Expense Tracking (Flask + Twilio + Supabase)

Project Context

Hey everyone! I noticed that I completely neglect using traditional budgeting apps because opening an app and typing in an expense takes too many steps. To solve my own problem, I built a full-stack WhatsApp bot. Now, whenever I spend money, I just text the bot something simple like: 'Spent 350 on lunch' or 'Paid 1200 for electricity'. The backend is written in Python/Flask, uses the Twilio WhatsApp API to receive the text messages, uses regular expressions (Regex) to parse the amount and category, and logs it directly into a Supabase PostgreSQL database. It even texts me a weekly summary of my spending habits every Sunday.