Tiller is a personal finance and budgeting platform for spreadsheet enthusiasts, financial planners, and DIY budgeters that automatically imports bank, credit card, and investment transactions into Google Sheets and Microsoft Excel with prebuilt budget templates, custom categories, and historical net worth tracking. Marketed as personal finance for spreadsheets, Tiller combines automatic daily import of bank, credit card, and investment transactions into Google Sheets and Excel, prebuilt Foundation Template with monthly budgets, custom category rules, historical net worth and cash flow tracking, multi-account aggregation across 21,000-plus US and Canadian banks, weekly email summaries, integrations with Google Sheets, Microsoft Excel, and Plaid, plus mobile-friendly responsive dashboard. Tiller is a strong fit for spreadsheet enthusiasts running custom budgets, financial planners templating client tracking, and DIY budgeters wanting full control without proprietary apps.