Table 1 Interview guide

Adolescents

✔ How do you define self-care?

✔ What measures do you take to take care of yourself? Why?

✔ Who do you think should help you take care of yourself?

✔ What do you think about having a website and smartphone app that can help you better manage your self-care?

✔ How do you want to track information and actions related to self-care in an app? what information?

✔ How do you want to perform better in the app to help you set self-care goals?

✔ If there is to be an app in the field of health with 5 sections (physical activity, nutrition, risky behaviors, and safety and events), what do you think about the educational content of these sections and how to present them?

Parents

✔ How do you define self-care?

✔ How long and how has your adolescent been active in the field of self-care?

✔ Do you think your adolescent wants to develop self-care practices? Why? Why not?

✔ What tools and resources do you feel your adolescent has to manage their own care independently?

✔ What do you think about having a website and smartphone app that can help your adolescent manage and develop better self-care?

✔ How regularly does your adolescent track their self-care activities? (for example, in paper or electronic form) Why not?

✔ About self-care management, what information do you or your adolescent want to feel comfortable with self-care?

✔ If there is to be an app in the field of health with 5 sections (physical activity, nutrition, risky behaviors and safety and accidents), what do you think about the educational content of these sections and how to present them?

Experts

✔ What do you say are the biggest challenges and obstacles for adolescents and families in self-care?

✔ Do you feel they have the tools and resources needed to manage self-care independently?

✔ What do you think about having a website and smartphone app that can help adolescents manage and develop better self-care?

✔ How do you see the main and practical themes of a suitable app for the care of adolescents?

✔ Are there other important features that we haven’t talked about that can help them become healthier?

✔ If there is to be an app in the field of health with 5 sections (physical activity, nutrition, risky behaviors, and safety and accidents), what do you think about the educational content of these sections and how to present them?