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ExpoDjangoGraphQLPlaidApr 2025

VoxProfit

AI-powered finance app with modular Django backend (trading, budgeting, accountant, assistant), Plaid integration, and Expo React Native frontend.

Overview

VoxProfit is a comprehensive AI-powered finance mobile app built with Expo React Native and a modular Django backend. The backend consists of 5 independent Python modules: core-be (auth, users), trading-be (market data, portfolio), budgeting-be (budget planning, tracking), accountant-be (Plaid banking integration), and assistant-be (AI financial advisor). The mobile app features Redux state management, GraphQL API, Plaid bank linking, AI chat assistant, investment tracking, bookkeeping, and budgeting tools with Tailwind (NativeWind) styling.

Challenge

Retail investors needed a unified mobile platform combining trading, budgeting, bookkeeping, and AI financial advice — with real bank account integration via Plaid.

Results

15,000+ active traders, $8M+ in managed portfolio value, 92% user retention after 6 months.

15K+
Active traders
$8M+
Portfolio value
92%
User retention
78%
Avg. prediction accuracy

Key Highlights

5 modular Django backend services: core, trading, budgeting, accountant, assistant
Plaid integration for bank account linking and transaction sync
AI financial assistant with chat interface
Expo React Native with Redux, GraphQL & NativeWind

Architecture

Modular Django backend with 5 independent services: core, trading, budgeting, accountant, assistant
GraphQL API layer with Celery for async tasks and background processing
Plaid integration for bank account linking, transaction sync, and balance tracking
Expo React Native with Redux state management, NativeWind (Tailwind) styling

Timeline

1

Backend Modules

4 weeks

Django modular architecture: core, trading, budgeting, accountant, assistant services

2

Plaid & AI Integration

8 weeks

Bank linking via Plaid, AI assistant backend, GraphQL API layer

3

Mobile App

8 weeks

Expo app with Redux, investment dashboard, budgeting tools, AI chat

4

Launch & Compliance

4 weeks

Android/iOS builds, EAS deployment, security audit, App Store launch

“I showed Zak a napkin sketch of what I wanted — stocks, crypto, budgeting, and an AI advisor all in one app. Three months later we had a polished product that investors actually use daily. The Plaid integration was seamless and users love the AI recommendations.”
James W.
CEO, Afroswap Sarl

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AI-powered health app with AI doctor chat, medication tracking, blood pressure/sugar monitoring, BMI tracking, and GraphQL + Plaid integration.

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