Splendo Health is a Dutch-American Digital Health startup from Duke University. Splendo Health's vision for health equity is to optimize the health and wellbeing of individuals everywhere, while mitigating costs for the healthcare and performance partners, through the implementation of a novel Cardiorespiratory Fitness (CRF)/VO2 max assessment using mobile apps, and select wearable technology. A solution that is comparable to an in-hospital Cardiorespiratory Pulmonary Exercise Test (CPET), without the expensive overhead, nor operating costs.