The Purpose of the Study is to Investigate if a Smartphone App Combined With Internet Based Cognitive Behavioural Therapy (ICBT) Leads to Improved Symtoms in Depressive Adults on Antidepressive Medicine, Compared to a Wait-list Control Condition

This study is a randomized controlled trial with the aim to investigate if an smartphone app in combination with ICBT can help adults (+18) on antidepressant medication who still suffers from depressive symptoms. Participants will either be randomized to a treatment phase for 9 weeks or to a wait-list control. The treatment primarily contains the installation and usage of a smartphone app where the participants can engage in a serious mobile game based on CBT-principles. They will receive access to a secure internet platform where they can find general guidelines about the app, and extra treatment modules (to use if needed). They will receive support on demand from a therapist during the whole treatment period.

Primary outcome measure is depressive symptoms (measured on the MADRAS scale). Secondary outcome measures will include measures of anxiety and quality of life. Pre-treatment measurement, post-treatment measurement, weekly measure, and 24 & 36 months follow up is planned to be collected through an online survey.

Inclusion criteria

• Ongoing drug treatment with an antidepressant mediated by an established care contact in (primary) care.
• 18 years or older.
• Be able to speak, read and write Swedish.
• Have access to a computer, tablet or other device with internet connection and smartphone to download the app.

Exclusion criteria

• Severe psychiatric or somatic problems that make participation difficult or impossible
• Ongoing abuse (via Audit and during interview)
• Acute suicidality
• Other ongoing psychological treatment or planned investigation.
• Planned dose change of medicine or change of medicine during pre-measurement.