# Consumer-Driven Usability Test of Mobile Application for Tea Recommendation Service
## Results and Discussion
### Evaluation of TeaPickTM
\begin{table}
\begin{tabular}{c c c c} \hline \hline  & **Questions** & **Mean (SD)** & **Cronbach’s \(\alpha\)** \\ \hline \multirow{8}{*}{P Perceived usefulness} & 1. I had no difficulty in using this application. & 6.77 (0.25) & \\  & 2. I find that it is easy to use this application. & 6.84 (0.45) & \\ \cline{1-1}  & 3. I learned how to use this application without any help. & 6.94 (0.25) & \\ \cline{1-1}  & 4. I find that there is no inconvenience in the overall & 6.61 (0.67) & \\ \cline{1-1}  & 5. I find that most people could use this application & 6.55 (0.68) & \\ \cline{1-1}  & 4. This application would be useful to my daily life. & 4.81 (1.22) & \\ \cline{1-1}  & 5. This application would be useful to my healthy life. & 5.16 (1.27) & \\ \cline{1-1}  & Overall & 5.56 (0.75) & \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Usability of _TeaPick_TM_. Figure 2: Histogram of _TeaPick_TM_ app use time. might be that there were some recommended teas that the participants did not know, or that some recommended teas were different from what some participants expected. We conjecture that this is the main reason for the relatively low score of question 2. **Intention to use**: As shown in Table 5, the participants were generally positive when asked about their intention to use the application; the overall average was 5.3 (SD: 1.02). While four of the five questions show an average score of 5 or more, the average score of question 1 is close to neutral. As can be seen in the results of questions 2-4, the participants responded positively to using the application. However, some participants gave a relatively low score regarding the installation of the application on their own smartphone (question 1). A total of 9 participants responded negatively, 11 responded neutrally, and 11 responded positively. We conjecture that this is mainly because the current application is a prototype that provides only the recommendation of 18 blended teas from one brand. Also, it might be that many participants did not feel the need to install the application on their smartphone because they did not enjoy drinking tea. **Brand attitude**: The participants showed generally positive attitudes towards the brand of teas recommended by the application. As shown in Table 6, the average scores are 4.81-5.39 for the five questions; the overall average is 5.21 (SD: 0.92). The average score of only one question (question 5) is less than 5, i.e., 4.81. Although the _TeaPick_TM application used in this study is not a branded application for brand promotion, most of participants gave more than neutral scores for the brand attitude. We conjecture that this kind of recommendation application will have a positive effect on attracting new customers to the brand. However, even if the participants had a positive attitude towards the recommended tea brand after using the application, this does not necessarily imply the intention to purchase tea. For an in-depth study on purchase intention, it is necessary to conduct additional experiments with a larger number of participants using an upgraded application with additional functionalities such as purchasing. \begin{table}
\begin{tabular}{c c c c} \hline \hline  & **Questions** & **Mean (SD)** & **Cronbach’s \(\mathbf{\alpha}\)** \\ \hline  & 1. I am satisfied with the recommended tea provided by this application. & 5.68 (1.11) & \\  & 2. I find that the tea recommended by this application is the same tea as what I expected. & 5.39 (1.17) & \\ Satisfaction & 3. I find that the recommendation results provide the information that I need. & 5.71 (1.01) & 0.805 \\  & 4. I find that this application met my curiosity. & 5.71 (0.97) & \\  & 5. On the whole, I am satisfied after using this application. & 5.71 (0.94) & \\  & Overall & 5.64 (0.78) & \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Satisfaction with _TeaPick_TM_.