Participants are assigned to a single study arm and receive a mindfulness-based mobile intervention delivered via a smartphone application over approximately 8 weeks.

Participants receive a mindfulness-based mobile intervention designed to support symptom management related to pain and sleep. The intervention is delivered via a smartphone application and includes structured mindfulness content such as guided meditation and brief mindfulness exercises. Participants are asked to engage with the intervention over an approximately 8-week period. The study evaluates feasibility and acceptability.

Percentage of enrolled participants who remain in the study through the 8-week intervention period

Percentage of participants who withdraw from the study and documented reasons for withdrawal

Percentage of assigned weekly modules completed by participants

Acceptability of the digital mindfulness-based intervention assessed using a study-specific acceptability questionnaire. The questionnaire measures multiple dimensions including comfort level, effort required to engage, perceived fairness for patients with sickle cell disease, perceived effectiveness for pain and sleep management, clarity of intervention purpose, confidence in the intervention, interference with other priorities, and overall acceptability. The questionnaire uses 5-point rating scales for all items. The questionnaire also includes open-ended questions about device use, suggested improvements, and helpful and unhelpful aspects of the intervention.