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Evaluating the Usability of Period Tracking Apps in the Global South Using uMARS and CTA | IEEE Conference Publication | IEEE Xplore

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Period tracking applications (PTAs) are widely used digital health tools, yet most usability evaluations have been conducted in high-income settings. This geographic imbalance limits understanding of how PTAs function in the Global South, where they often serve as a primary source of menstrual health information. This study aimed to evaluate the usability of the Flo period tracking app among Global South users. A sequential explanatory mixed-methods design was employed: 50 participants completed the user version of the Mobile App Rating Scale (uMARS), and 10 participants subsequently participated in Con-current Think-Aloud (CTA) sessions. uMARS results indicated high overall usability (mean score = 4.08), with Functionality, Aesthetics, and Information rated strongly, while Engagement scored lower (mean = 3.86). Subjective quality ratings showed high willingness to recommend (76%) and continued use (58%), but limited willingness to pay (36%). CTA analysis revealed eight themes, including reliable core functionality and educational value, alongside concerns about vague symptom scales, subscription barriers, and privacy. These findings suggest that Flo is perceived as usable and impactful but would benefit from design refinements addressing health literacy, transparent monetization, and culturally sensitive privacy practices. The study demonstrates the value of combining uMARS with CTA to capture both structured ratings and lived experiences and provides actionable insights for developing more inclusive FemTech tools for diverse global users.

Evaluating the Usability of Period Tracking Apps in the Global South Using uMARS and CTA | IEEE Conference Publication | IEEE Xplore --> --> IEEE Account Change Username/Password Update Address Purchase Details Payment Options Order History View Purchased Documents Profile Information Communications Preferences Profession and Education Technical Interests Need Help? US & Canada: +1 800 678 4333 Worldwide: +1 732 981 0060 Contact & Support About IEEE Xplore Contact Us Help Accessibility Terms of Use Nondiscrimination Policy Sitemap Privacy & Opting Out of Cookies A not-for-profit organization,

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