- Intervention group (SIMPLe 2.0 + TAU): The experimental group will use the application SIMPLe 2.0 and simultaneously will receive their usual treatment which includes pharmacological and psychological interventions. A smart-phone device with the SIMPLe 2.0 application pre-installed, will be given to the participants for free during the study with the mandatory condition that it has to be their main mobile-phone during the next 3 months. In the case the patient accept to participate but don´t want to switch from their current smart-phone, they will be offered the possibility to download the SIMPLe 2.0 application from the App Store and a username and password will be given to use it. The patient will be asked by customizable automatic reminder notifications to answer daily and weekly questionnaires based on DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, 5th edition) criteria for a manic, hypomanic or depressive episode. Additionally, the signs will be automatically recorded based on the smart-phone usage measured by the smart-phone screen on time, texts messages sent, telephone calls made and social networking apps activity, in addition to the physical activity monitored by the built-in actimeter. At the same time, they will receive through the application daily psychoeducative customized messages based on the data recollected by the application. Relapse risk will be fixed by means of a logarithm including both subjective and objective data. If the logarithm points at a moderate or high risk, the clinical team will be immediately contacted and the patient will be offered to call emergency services for assistance.