A quasi-experimental pretest / posttest design will be used. During a four-week baseline period, researchers will collect data on engagement, quality of life, neuropsychiatric symptoms, and quality of the care-patient relationship. Participants will then use the BRAIN app for four weeks, during which engagement data will be collect. After the intervention period, researchers will collect data again on quality of life, neuropsychiatric symptoms, and quality of the carer-patient relationship.