BudgetBrain
Featured full-stack projectA payday-planning app that answers a simple question: how much can I spend after rent, bills and essentials? The backend does the maths; AI helps explain the result.
- React 18
- Vite
- Node.js
- Express
- PostgreSQL
- Prisma
- Vitest
- Supertest
Engineering notes
- Deterministic safe-to-spend, protected-money and recovery-gap calculations
- JWT authentication, bcrypt password hashing and Zod validation
- CSV transaction import, affordability checks and recovery scenarios
- Groq AI explains backend results without calculating financial truth
Simulated financial scenarios; no real bank integration.

Try the budget calculator
What's left after the essentials?
This demonstration uses simulated values and simplified logic. It is not financial advice and does not connect to a bank.