Background: Mobile health technology offers promising means to implement public
health strategies for the prevention and management of chronic conditions. However, at the moment,
there is a dearth of both; specific mobile health tools tailored for the knowledge and language needs
of Indian population; as well as enough systematic and scientific clinical data to analyse their impact
in varied Indian socioeconomic and disease populations.
Objective: To develop a smartphone-based bilingual educational mobile application for heart patients
and pilot test in an Indian clinical setting.
Methods: An Android™ based mobile application was developed according to a systematic instructional
design model. Thereafter, expert assessment was done by 3 software engineers and 2
healthcare professionals using a peer-reviewed, objective and multidimensional Mobile Application
Rating Scale (MARS). A pilot user satisfaction evaluation was done based on feedback from 35 Coronary
Artery Disease patients visiting Cardiology outpatient Department of a North Indian tertiary
Results: An Android™ based mobile application named as ‘Happy Heart’ was developed. The content
was developed in both Hindi and English under professional supervision. For this mobile application,
the Mean MARS score was 3.60 ± 0.86 and subjectivity score was 3.30 ± 1.03. The overall
user satisfaction response for the mobile application was 4.09 ± 0.75 indicating that most of the testers
found it useful.
Conclusion: This mobile application is developed as a research tool to further conduct a clinical
study in Coronary Artery Disease Patients. Current evaluation was a pilot testing wherein this application
showed promising results.