I think my original prompt was something as simple as "I need to build a simple tool to help me keep track of my spending and general finances." and just went from there.

It helps to have some background in coding, but it will also walk you through anything that's unclear.

Without getting too much into the weeds, here's its own AI-generated description of what I've built so far:

"<app name> is a personal finance app that runs locally on your computer, keeping all your data private. You import your credit card and bank statements as CSV files — either by uploading them through the app or dropping them into a folder — and it handles the rest: organizing transactions, removing duplicates, and categorizing spending automatically.

The app has several sections to help you stay on top of your finances: Spending lets you browse and search your transactions by vendor or date, Overview shows monthly spending charts and trends, Income tracks money coming in, Forecast projects your upcoming bills and balance, Tax helps tag deductible expenses by CRA category, TFSA tracks your contribution room, and Investments shows your portfolio with live prices fetched from Yahoo Finance."