A Novel mHealth Intervention to Improve Outcomes of Children With Medical Complexity

Inclusion Criteria: * CMC, ages 1-18 years and their parents (or primary caregivers) * CMC (inpatients or outpatients) who receive care at participating sites (comprehensive care clinics for CMC) * Own (or provided) a smartphone or tablet with internet access * Speak English or Spanish. * CMCs are identified using an operational definition, as having: 1) multisystem chronic diseases involving ≥3 organ systems, 2) ≥3 HCPs involved in their care, 3) high fragility or frequent (≥2) or 1 prolonged (\>10 days) hospitalization in the prior year, and/or 4) medical technology dependence. Exclusion Criteria: * Critically ill CMC and infants. * CMC exhibit similar developmental and functional abilities and typically function below expected for a 7-year-old child, allowing inclusion of a wide age range in studies. * Infants were excluded as many CMC \<1 year have prematurity-related conditions that may resolve by age 2. * CMC \>18 years of age were not included as some may transition to adult health care. * Note: No one will be excluded due to lack of smartphone/internet access. We estimated \<10% of families may not have a smartphone/internet, and will provide them low-cost tablets and cellular internet access.