Adaptive Cell Phone Support to Promote Medication Adherence

The goal of this pilot clinical trial is to refine and test a mobile health intervention for promoting medication adherence in a population of adolescents and young adults with chronic health conditions. The main question\[s\] it aims to answer are: * How should the intervention be designed to best fit patients\' needs and preferences? * Is an adaptive intervention (personalizing the intensity of support based on patients\' needs) efficacious for promoting medication adherence Researchers will compare the adaptive intervention to automated text message reminders see if the adaptive intervention shows stronger positive effects on medication adherence.