Usability Evaluation of Mobile Applications in Indonesia

<div&gt;Indonesia has one of the world's fastest-growing mobile applications&lt;/div&gt;<div&gt;markets.Due to the increasing population of Indonesia and with the growing number of&lt;/div&gt;<div&gt;mobile applications in Indonesia, a user-friendly interface is important to stay in the&lt;/div&gt;<div&gt;competition . In this study, we evaluated three big mobile applications for various&lt;/div&gt;<div&gt;purposes. We conducted a separate experiment for each application. The first&lt;/div&gt;<div&gt;experiment evaluated DANA, one of the most-used e-wallet. There were seven subjects&lt;/div&gt;<div&gt;recruited with ages ranging from 35 to 53 years for the first experiment. The second&lt;/div&gt;<div&gt;experiment recruited eight subjects aged 20 to 50 years to evaluate GOJEK, the leading&lt;/div&gt;<div&gt;taxi booking, delivery, and payment application. The third experiment evaluated Blibli,</div&gt;<div&gt;one of the biggest e-commerce applications. A total of 7 subjects with ages ranging&lt;/div&gt;<div&gt;from 53 to 63 years were recruited in the third experiment. Think aloud protocol and&lt;/div&gt;<div&gt;system usability scale (SUS) questionnaire were used to evaluate the usability of the&lt;/div&gt;<div&gt;applications. From the collected data, the SUS scores were found as 65.71%, 70.63%,</div&gt;<div&gt;and 76.07% for DANA, GOJEK, and Blibli, respectively. The evaluation results&lt;/div&gt;<div&gt;showed the mobile applications we tested to be acceptable. However, the applications&lt;/div&gt;<div&gt;need to undergo further improvement in order to increase their acceptability.</div&gt;