Stellatriq is a precision-engineered optical analysis tool that brings fringe-tracking physics to your fingertips. Designed for astronomers, photonics researchers, and interferometer engineers, it computes phase error and coherence loss with exceptional clarity from key experimental parameters such as baseline, delay-line accuracy, signal-to-noise ratio, and integration time. Its elegant glassmorphic interface, animated coherence gauge, and cosmic gradient theme make complex optical stability assessments intuitive and visually engaging. By blending scientific accuracy with immersive design, Stellatriq transforms stellar interferometry calculations into a seamless, interactive experience for modern optical exploration.