Figure 8. The Usefulness of the Whole Web Application
C. The Operability of the Whole Smartphone Application
The operability evaluation result of the smartphone
application is shown in Figure 9. About 50 percent of the
subject answered "Easy" or "Somewhat easy". On the other
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hand, the subject who answered "Difficult" or "Somewhat
difficult" was less than 10 percent. Therefore, we were able
to confirm the great operability of the smartphone
application by this questionnaire survey. However, there is
still room for improvement.
Figure 9. The Operability of the Whole Smartphone Application
D. The Usefulness of the Whole Smartphone Application
The usefulness evaluation result of the smartphone
application is shown in Figure 10. About 80 percent of the
subject answered "Useful" or "Somewhat useful". On the
other hand, there was no one for the subject who answered
"Useless" or "Somewhat useless". Therefore, we were able to
confirm the great usefulness of the smartphone application
by this questionnaire survey.