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Project

myBudget

Mobile Budgeting & Personal Finance Platform

A mobile-first budgeting app with a Go backend, Expo React Native client, JWT auth, recurring payments, analytics, tax-aware tracking, and smart category recommendations.

GoPostgreSQLExpoReact NativeTypeScriptJWTAnalytics
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Overview

myBudget is a mobile-first personal finance platform built around clean budget tracking, recurring payment awareness, category analytics, and recommendation-driven planning. The system pairs an Expo React Native client with a Go API that keeps budgeting, transactions, analytics, profile, and onboarding workflows in explicit service boundaries.

myBudget Architecture

myBudget uses an Expo mobile client backed by a Go API with authenticated finance workflows, analytics aggregation, recurring payment logic, and recommendation services.

mobile

Expo Mobile App

Home, analytics, categories, onboarding, login, profile, and budgeting screens.

api

Go API

Chi server with auth, transactions, categories, dashboard, recurring, taxes, and recommendations.

auth

Auth Layer

JWT access flows, refresh, email verification, and protected user routes.

budget

Budget Domain

Profiles, category budgets, transactions, period close, recurring rules, and tax estimates.

analytics

Analytics & Insights

Category breakdowns, monthly trends, saved totals, spending totals, and budget suggestions.

db

PostgreSQL

Persistence for users, profiles, categories, budgets, transactions, recurring rules, and analytics inputs.

Service / Data Flow

Expo Mobile App→Go API
Authenticated app requests
Go API→Auth Layer
Identity and route protection
Go API→Budget Domain
Budget workflows
Budget Domain→Analytics & Insights
Spending history
Analytics & Insights→Expo Mobile App
Charts and suggestions
Go API→PostgreSQL
Persistent records
Budget Domain→PostgreSQL
Transactions and plans

What I built

  • Go API with JWT auth, onboarding, profile, categories, transactions, recurring rules, dashboard summaries, period close, analytics, and recommendations
  • Expo React Native app with focused screens for overview, analytics, categories, onboarding, login, and profile management
  • Budget domain logic for tracking cadence, category progress, recurring payment handling, tax-aware income estimates, and period close workflows
  • Smart budget recommendation engine that uses spending history, recurring costs, outlier-adjusted totals, confidence scoring, and income-fit constraints
  • Mobile UI components for charts, progress rows, budget hero cards, color selection, calendar picking, stat cards, and secure local storage
  • Test coverage around auth, migrations, recommendations, recurring logic, server setup, configuration, and tax estimation