The Effectiveness, Efficiency and Reliability-in-Use of Daylio Mobile App
This study conscripted 14 participants to examine the effectiveness, efficiency and reliability-in-use of a mood tracker app. A usability laboratory protocol was utilized to elicit task completion (success) rate, task completion time, and task error metrics with which to measure effectiveness, efficiency and reliability-in-use of the Daylio app respectively. The researchers conducted the evaluation in a lab setting. Overall, the outcomes reveal that the Daylio mobile app is effective, efficient and reliable in use. However, a close scrutiny indicated that there are pressing issues that need to be fixed to further enhance the quality of the app. Fixing these issues will certainly improve the success and performance of the app, its market penetration, as well as prompting good users/customers loyalty and retention.