Table 2. Tasks for evaluating the usability of the created app.

1. Please read the app user manual.

2. Please set a tooth brushing remainder at 9pm

3. Please open the dental chart and find the areas required extra attention.

4. Please run the brushing mode once.

5. Please find the oral care video menu.

6. Please watch a video on “how to use dental floss” or “how to use an interdental brush”.

7. Please find the brushing reminder that you set earlier.