I Built a Flutter App with Firebase + MercadoPago and Turned It Into a Starter Kit (Real Production Code)

Most Flutter tutorials show you how to build a todo app. This is not that.

I spent months building Valúa — a real Flutter app currently live on Google Play in Mexico, with paying customers, Firebase Auth, Firestore, and MercadoPago payments fully integrated. Then I packaged the entire foundation into a starter kit so other devs don't have to start from scratch.

Here's what I built, how it works, and why MercadoPago integration is harder than anyone tells you.

The stack

Flutter (Dart) — cross-platform mobile