Table 2.
Semistructured discussion guide.
| Questions during interview 1, 2, 3, and 4 | Additional instructions |
| So far, what do you like or dislike about the Active Coach app? | What did you find good or not good? |
| Why do you think that was good or not good? | |
| Can you tell a bit more about that? | |
| Are there certain parts of the app that you find confusing or that you do not understand? | Which parts are confusing? |
| Can you tell me more about that? | |
| Why do you think that? | |
| How could this be improved? | |
| What change(s) would you recommend to improve the app? | Design, color, font, content, ease of use |
| Why do you think that would improve the app? | |
| Can you tell me more about that change? | |
| Are there certain parts of Active Coach app that definitely should stay the same? | What are they? |
| Can you tell me a bit more about that? | |
| Why do you think that? | |
| What do you think of the use of the Fitbit Charge? | Why do you think that? |
| Can you tell me a bit more about that? | |
| Are there any problems or difficulties while using the Active Coach app or the Fitbit? | Which one? |
| Can you tell me a little more about that? | |
| What do you think of the daily and weekly goals? | Do you manage to achieve your goal? |
| How useful do you find these goals? | |
| Have these goals helped you to be more active? | |
| What do you like or dislike about the goals? | |
| Can you tell me a little more about that? | |
| What do you think of the tips you get each Monday and Friday? | Have you read the tips and facts? |
| Do you sometimes reread the tips and facts? | |
| What do you think of the facts you get each Wednesday? | How useful do you find these tips and facts? |
| Do these tips or facts help you to be more active? | |
| What do you think of the amount of tips and facts? | |
| Would you like to get more or less? | |
| What do you like or dislike about the tips and facts? | |
| Can you tell me a little more about that? | |
| Do you use the app regularly? | Do you use the app more, the same, or less than in the beginning? Why? |
| What makes you continue to use the app? | Would you continue to use the app if you were not participating in a study? Why (not)? |
| What would be the main reason for you to stop using the app? | Why? |
| How could we change this? |