ReActDx® is a novel medical diagnostic application for use by healthcare professionals in the neurosciences, including neuro-rehabilitation and neuropsychology. ReActDx® can be used to assess attention, fine motor skills, appendicular coordination, visual spatial processing, and reaction time. ReActDx® can provide valuable clinical information when looking for the presence of dystaxia and visual spatial deficits, along with frontal lobe function. ReActDx® can be used as a diagnostic assessment tool in a variety of patient populations such as Parkinsons, Multiple Sclerosis, ALS and Stroke.