Budget Tracker

Most budgeting apps assume a single monthly cycle, but plenty of people are paid twice a month and budget in halves. Budget Tracker models that directly: every month splits into a 1st half (days 1–15) and a 2nd half (days 16–end), each with its own view and totals.

It sets a starting balance per month, and the second half automatically carries over whatever is left from the first — so the running balance always reflects reality instead of resetting arbitrarily. Live summary cards and a totals bar keep income, expenses, and net visible while filtering.

The stack is deliberately lean: React 19 + Vite on the front end, Tailwind CSS v4 for styling, and Supabase for both PostgreSQL storage and authentication. Access is locked to an email allowlist, with Row Level Security policies ensuring each user can only ever read and write their own transactions.