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Development and Formative Usability Evaluation of a Theory-Driven Progressive Web Application for Young Adult
Ayesha Thanthrige1, Nilmini Wickramasinghe1
1School of Computing, Engineering and Mathematical Sciences, La Trobe University, Kingsbury Drive, Bundoora, Victoria, 3086, Australia, 61 430 601 237.
JMIR Research Protocols
|March 24, 2026
Summary
This study implemented MiCARE, a theory-driven progressive web application (PWA), to improve sustained wellness engagement in young adults. Formative usability evaluation assessed its feasibility and user satisfaction, informing future digital health interventions.
Area of Science:
- Digital health interventions
- Preventive health technology
- Young adult wellness
Background:
- Young adults face increasing wellness challenges, including prediabetes risk, necessitating sustained engagement with preventive health strategies.
- Digital wellness applications show potential for promoting healthy behaviors but suffer from high dropout rates and lack of personalization.
- This paper details the technical implementation and usability evaluation of MiCARE, a user-centered progressive web application (PWA) designed for sustained wellness engagement in young adults.
Purpose of the Study:
- To systematically implement theory-driven design specifications into the functional MiCARE web application.
- To conduct a formative usability evaluation of the MiCARE platform with young adults in Australia.
- To assess usability, usefulness, and satisfaction using the task-technology fit and unified theory of acceptance and use of technology frameworks.
Main Methods:
- An embedded mixed-methods study involving technical implementation (Phase 3) and usability evaluation (Phase 4).
- Phase 3: Agile development of 6 theory-driven features (chatbot, learning hub, goal setting, gamification, reminders, dashboard) using web technologies and Google Dialogflow ES.
- Phase 4: Formative usability evaluation with 20 university-affiliated young adults using surveys and real-time analytics, analyzed via descriptive statistics and thematic analysis.
Main Results:
- Technical implementation of MiCARE's core features is ongoing, with active development and verification.
- The formative usability evaluation (Phase 4) is scheduled to commence after Phase 3 completion.
- Evaluation results are anticipated for dissemination in early 2027, providing insights into feasibility, acceptability, and usability.
Conclusions:
- This study contributes to the technical implementation and usability evaluation of a multitheoretical, user-centered PWA for wellness.
- It bridges the gap between conceptual wellness frameworks and practical, deployed digital health interventions.
- Findings will inform refinements and guide future large-scale studies on digital wellness engagement for young adults.
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