Custom Budget & Expense Tracker

I need a complete budgeting and expense-tracking tool that makes it effortless to record income, categorize spending, and see real-time balances. The core features I have in mind are:

• Quick entry screens for cash, card, and bank transactions
• Editable category list with color-coded charts and monthly limits
• Summary dashboard that highlights total inflow, outflow, and remaining budget
• Simple report exports (CSV or PDF) so I can back up data or share it with my accountant
• Secure sign-in and local data encryption

You are free to choose the tech stack you work fastest in—as long as the final build is lightweight, responsive, and can be deployed without license headaches. Please include:

1. A short note on the framework or libraries you intend to use
2. A timeline for delivering an interactive prototype and the final, tested release
3. Post-launch support terms (bug fixes, minor tweaks)

Acceptance criteria: the tracker loads quickly, saves entries without errors, and reflects every new transaction immediately on the dashboard.

Send over a brief plan and any relevant code samples, and we can get started right away.