Table 2.
Result of the System Usability Scale.
| Questions | P1a | P2 | P3 | P4 | P5 | Average |
| 1. I think that I would like to use this app | 4 | 4 | 3 | 2 | 3 | 3.2 |
| 2. I found the app unnecessarily complex | 1 | 0 | 2 | 1 | 1 | 1 |
| 3. I found the app easy to use | 1 | 3 | 3 | 2 | 2 | 2.2 |
| 4. I think I would need support from a technical person to use this app | 4 | 4 | 3 | 3 | 4 | 3.6 |
| 5. I found the various functions in this app were well integrated | 2 | 3 | 4 | 2 | 2 | 2.6 |
| 6. I thought there was too much inconsistency in this app | 1 | 2 | 3 | 2 | 2 | 2 |
| 7. I would imagine that most people would learn to use this app very quickly | 0 | 3 | 4 | 3 | 4 | 2.8 |
| 8. I found the app very cumbersome to use | 1 | 3 | 3 | 2 | 4 | 2.6 |
| 9. I felt very confident using the app | 1 | 2 | 3 | 1 | 4 | 2.2 |
| 10. I needed to learn a lot of things before I could start using this app | 4 | 4 | 3 | 4 | 4 | 3.8 |
| SUSb score (sum×2.5) maximum 100 | 47.5 | 70 | 77.5 | 55 | 75 | 66.6 |
aP1-5: person 1-5.
bSUS: System Usability Scale.