Taking Control of Your Health Data: A Solid-Based Mobile App for Wearable Data Collection and RDF Visualization

While wearables generate valuable health data, proprietary ecosystems limit interoperability and user control. We address this challenge with a user-friendly Android application that seamlessly collects data from diverse wearables via the Web of Things (WoT), converts the collected data into interoperable RDF using the SOSA/SSN ontology, and stores RDF in user-controlled Solid servers. Unlike existing solutions, our approach includes mapping the data to established ontologies and provides a user interface, empowering everyday users to explore their health data through interactive visualizations. We showcase the application's functionalities through live demonstrations - code, demo videos, and an installable apk are publicly available at https://github. com/derwehr/WoT-Solid/.