Tiller is a financial management tool designed to help individuals and businesses track their income and expenses. It integrates with various bank accounts and automatically updates financial data in real-time, allowing users to see their financial situation at a glance. Tiller uses spreadsheets, making it customizable for different budgeting needs. The platform offers templates and features that assist users in creating budgets, monitoring spending habits, and planning for future financial goals. By utilizing Google Sheets or Microsoft Excel, Tiller provides flexibility and control over personal finance management, catering to those who prefer a hands-on approach to budgeting.