Building a "Local-First" Expense Tracker with zero server costs

As developers, we tend to follow a common practice: frontend + api + database. Yet, when I decided to develop the Sheet Manager application, I wanted to break this paradigm. I wanted to create an application which is 100% private, offline, and completely zero-cost. And Local-First architecture helped me achieve that. The Architecture There is no reason why your sensitive financial data should be stored on some PostgreSQL or MongoDB instance somewhere on the cloud. Instead, all of it is stored in