FEPSim is a patented, clinician-designed rehabilitation device that restores hand, wrist, and forearm function through realistic, resistance-based motion. Unlike bulky robotic systems, FEPSim is portable, affordable, and enables high-repetition, task-specific therapy for neuro, orthopedic, and sports patients. Validated by leading rehab centers, it fills the gap between passive recovery and real-world performance, helping patients regain strength and independence faster while offering clinics measurable outcomes and rapid ROI.