Table 4.

Key features of each evaluation cycle.

Evaluation cycle	Objectives	Methods
Evaluation 1	Primary: identify main usability challenges, gather understanding of target user group’s needs, and assess understanding of content. Secondary: gather insight into potential design improvements.	Think aloud. Observation. Guided survey.
Evaluation 2	Primary: make layout easy to use for people who are novice tablet users and have low literacy, assess understanding of content. Secondary: gather insight into preferred look and feel of app.	Observation. Retrospective usability questions. Guided survey.
Evaluation 3	Primary: test whether users know how to select options, assess understanding of content, make content more engaging. Secondary: ensure that uninterrupted participants were completing the app in an appropriate time.	Observation. Retrospective usability questions. Guided survey. Task completion times.
Evaluation 4	Primary: assess whether the changes made to the application affected users’ expectations, such that they were making more informed decisions.	Observation. Retrospective usability questions. Guided survey.