Teybergwha is a scientific calculator designed for modeling ultrafast behavior of reconfigurable metasurfaces by linking electrical bias and carrier mobility to optical phase-switch performance. It provides accurate estimates of switching latency and phase contrast through a physics-informed algorithm presented in a refined gradient interface. The application combines clarity, precision, and style, offering instant validation, interactive results, and seamless sharing in one intuitive platform that transforms complex metasurface analysis into a smooth mobile experience for researchers, photonic engineers, and material scientists.