Table 2 App & intervention components as reported in eligible studies.

Author year

Monitoring, e.g. EMA, symptom monitoring, progress monitoring

Participant engagement, e.g. participant input requested

Tailoring, e.g. context sensing, feedback or intervention content based on input

Gamification, e.g. comic format, upleveling

Adherence monitoring/reminders, e.g. text messages, emails, push notifications

Social component, e.g. forum use, enlist social support, social media use

Personalization, e.g. personal preferences, personal dashboard, use of photos, music, contacts

Guidance, e.g. phone calls, emails, text message, automated conversations

Simulation of situations

App linked to wearable device