Mountikalq is a precision calculator designed for optical engineers, mechanical designers, and metrology professionals working with mounted lens systems. This app helps estimate how mechanical mounting stress caused by torque and fit tolerance can influence key optical performance parameters such as focal shift and optical axis deviation. By inputting lens diameter, mount fit type, and the torque applied during assembly, users receive instant feedback on potential optical misalignments. These estimations assist in identifying assembly-induced aberrations early in the design or quality control process. Mountikalq is ideal for applications in photonics, optical manufacturing, imaging system integration, and aerospace optics, where even minor stress-induced shifts can impact system accuracy. With a clean, icon-driven interface and validated engineering logic, the app offers a practical, on-the-go tool for improving optical alignment decisions and ensuring tighter system tolerances.