mDex is a smartphone based, low cost, reusable, near-instant point of care diagnostic tool aimed at increasing access to sickle cell diagnostic services in low-resourced areas.This equips medical personnel with no hematology skills to diagnose the sickle cell disease (SCD) accurately to facilitate early diagnosis. Diagnostic tests for SCD are expensive and time-consuming and without “proof” of disease, patients may not be able to receive the care they need in a timely manner. mDex bridges the knowledge gap and the feedback loop between the time of testing and results.