Across diseases adherence to treatment is one of the most important modifiable factors wich decreases the treatment effect. As much as 30-50% of patients do not adhere to recommended treatment. Adherence to treatment is complex and it depends on many factors; the patient, the patient surroundings (social support, the function of the health service, availability and resources) and characteristics with the disease and the corresponding treatment. World Health Organization (WHO) points to adherence to treatment as a global challenge and supports political decisions and research interventions that will increase adherence. Furthermore, adherence is considered to be a huge challenge in treatment for lifestyle changes such as smoking cessation, diet changes, training and physical activity. A meta-analysis (n=42 000) documented that "mixed mode of delivery interventions", where traditional techniques for behavior change was combined with digital tools, proved more effective than the use of traditional techniques for behavior change alone. Another meta-analysis (n=20 000) confirms this conclusion; therapy, guidance and conversation has an increased effect when it is used together with dedicated digital tools (6).