Building a Budget Buddy App with React Native Expo SQLite

Your budget app does not need a server. SQLite runs on every phone (over 1 trillion active databases worldwide), and Expo SQLite gives you real SQL right on the device. So I built a budget tracker with Expo SDK 50 that works offline and keeps your financial data private.

I build it step by step in the video.

What's inside

• Design a relational schema with categories and transactions tables
• Create and seed the database with the sqlite3 CLI
• Insert, query, and delete expenses from React Native
• Recalculate totals live as the data changes
• Keep huge numbers readable with auto-sizing text
• Where to go next: pagination, exports, and cloud sync

Resources

CourseReact Native course

Get the fundamentals behind apps like this: 17 sections and 800+ minutes, up to shipping on the stores.