FideliQuditrix is an advanced quantum state tomography calculator that bridges theory and experiment by providing precise measures of state fidelity and trace distance between measured and ideal density matrices. Unlike generic math tools, it integrates detector efficiency and photon count parameters to reflect realistic experimental conditions, while delivering actionable insights and optimization tips to help researchers surpass 95% fidelity in their setups. Its intuitive design, scientific rigor, and interactive feedback make it a distinctive companion for quantum labs, students, and educators seeking to explore and validate quantum information with clarity and confidence.