This interactive simulator visualizes projected monthly revenue for a SaaS business over 36 months. It shows how changes to current customers, monthly new customers, churn rate, and subscription price affect the revenue curve. Users adjust parameters via sliders, triggering immediate recalculation and chart updates. The projection is computed using a month-by-month growth model, rendered as an SVG line chart with D3.js, while React manages the interactive UI controls and state.