testRigor is an automation tool designed to streamline regression testing by autonomously detecting new functionalities in applications and capturing screenshots to illustrate user actions and changes in the interface. Users begin by setting up a new application for testing, specifying various latency parameters to accommodate different network and server conditions. The tool explores the application by interacting with its elements and generating scenarios that represent potential user actions, including screenshots of each step. This process allows developers to identify and rectify issues, as demonstrated with a simple calculator application where a miscalculation was discovered through a retest. The tool highlights discrepancies by comparing past and present scenarios, making it easier for developers to locate and fix errors before they impact users.