It’s a personal finance manager. I’ve been using income and expense tracking apps for around ten years, and every one of them has had shortcomings that I wanted to solve in my own product. I primarily built the app for myself, using CoinKeeper in its best years as one of my main references. Below, I’ll describe the process, the problems I encountered, and the final result. This isn’t intended to be a tutorial — it’s simply a record of my experience.