Co-criação e desenvolvimento de uma aplicação móvel para a avaliação da literacia nutricional.

Abstract

This work proposes and tests a co-design model for the development of nutritional literacy mobile applications. The study followed a Design-Based Research (DBR) approach, combined with Design Thinking methodology, integrating end users as active co-designers throughout the process. A co-design workshop was conducted with twelve participants, resulting in sixteen design requirements that guided the research decisions. The application design including information architecture, visual system, and all screens was developed in Figma, and subsequently converted into a functional prototype in React 18 with TypeScript to simulate a realistic experience for evaluation purposes. The prototype includes features such as meal logging, AI-powered nutritional analysis, a learning centre, gamification mechanics, and a professional panel (NUTLY PRO). Evaluation was conducted through usability testing with eight participants using the think-aloud protocol, the SUS scale, and a custom questionnaire, yielding an average SUS score of 91.1. The results validate the proposed model and provide the basis for recommendations for future iterations within the DBR cycle.