BudgetWise
Case Study 2023

BudgetWise.

BudgetWise was born from a frustration with cluttered, ad-heavy finance apps.

Overview

BudgetWise was born from a frustration with cluttered, ad-heavy finance apps. The mission was to build a tool that prioritized data integrity and visual clarity. It allows users to track expenses, set granular budgets, and visualize their net worth growth through a precise, editorial interface.

Tech Stack

  • TypeScript
  • Qwik
  • Prisma
  • Cloudflare

Role

Lead Product Engineer

Core Pillars

Real-time Analytics

Instant processing of transactions with dynamic categorization using custom logic.

Bank-Grade Security

End-to-end encryption for all sensitive financial metadata.

Smart Export

Generate PDF/CSV reports with a single tap, curated for tax readiness.

Global Sync

Seamless multi-device synchronization for real-time data access.

Challenge 01

Complex Data Visualization

Rendering thousands of data points without sacrificing UI responsiveness was the primary hurdle. Standard charting libraries were too heavy and didn't match the design system's specific aesthetic requirements.

The Solution

Built a custom lightweight SVG graphing engine from scratch. This allowed for granular control over aesthetics and ensured smooth 60fps interaction on mobile devices.

"Reduced bundle size by 45% by stripping away unused charting modules."
Challenge 02

Database Concurrency

Handling massive simultaneous write operations for shared family accounts caused significant locking issues in the initial PostgreSQL setup.

The Solution

Implemented a write-ahead logging strategy and optimized middleware to batch transactions. Migrated to a micro-caching layer to handle read-heavy balance inquiries.

"Improved average API response time from 240ms to 42ms."

Ready to explore the code?

BudgetWise is open-source and available for review. Dive into the architectural decisions that power this project.