  Medical research is one area where collecting data is usually hard and
expensive. With the launch of ResearchKit, Apple and Sage Bionetworks made
large-scale personal data collection increasingly popular via simple text-based
survey apps running on mobile phones. But such surveys can be a barrier in
terms of usability and richness of the data being collected. In this paper, we
present SDL-R X , a powerful software library designed for ResearchKit that
enables study-specific, personalized, and rich visual surveys, for both iOS and
Android platforms.
