Usability Evaluation of COVID-19 Mobile Apps Using SUS

<div&gt;The whole world is going through an unprecedented crisis in the wake of the&lt;/div&gt;<div&gt;Coronavirus disease (COVID-19) outbreak resulting in lockdowns and imposing&lt;/div&gt;<div&gt;restrictions on economic activities. Governments are leveraging technology for&lt;/div&gt;<div&gt;identifying, monitoring, tracking, and containing active cases using mobile apps. Many&lt;/div&gt;<div&gt;countries have developed and deployed COVID-19 mobile apps to track patients, trace&lt;/div&gt;<div&gt;contacts of infected people, and provide services and facilities medicines to needy&lt;/div&gt;<div&gt;people. Indian government developed the "AarogyaSetu" app to track infected patients.</div&gt;<div&gt;However, the utility of these apps, their effectiveness, their usability score raises many&lt;/div&gt;<div&gt;open questions. A description of usability, usability attributes, and usability evaluation&lt;/div&gt;<div&gt;methods for such apps are presented in this chapter. The chapter also covers the results&lt;/div&gt;<div&gt;of practical experiments due to COVID-19 mobile apps from different countries and&lt;/div&gt;<div&gt;different apps developed by various states in India and shows the calculated usability&lt;/div&gt;<div&gt;score. This chapter will help the reader to understand the usability of COVID-19</div&gt;<div&gt;mobile apps. A questionnaire collects usability attributes like efficiency, effectiveness,</div&gt;<div&gt;user satisfaction, user feedback, etc. In the questionnaire, usability evaluators prepared&lt;/div&gt;<div&gt;ten questions about each attribute, each question having five responses from strongly&lt;/div&gt;<div&gt;agree to strongly disagree. These responses are evaluated and used to calculate the&lt;/div&gt;<div&gt;app's usability score using the System Usability Scale (SUS) tool. Using this score will&lt;/div&gt;<div&gt;help governments and organizations identify problem areas and improve the usability&lt;/div&gt;<div&gt;score.</div&gt;