FormulAI is an AI-powered assistant that simplifies work in spreadsheets. It helps users build and understand formulas, query workbooks, and generate synthetic data using natural language. The tool includes a Formula Explainer that provides step-by-step explanations, a Formula Builder that creates formulas from plain descriptions, a Workbook Analyzer that turns worksheets into queryable databases, and a Data Simulator for generating synthetic datasets. FormulAI integrates with Microsoft Excel and Google Sheets, and offers an Excel add-in for seamless formula insertion. It is designed for anyone who uses spreadsheets, from casual users to small businesses.