In an international city like Geneva, doctors often have to treat patients with whom they share no common language. In the absence of professional interpreters, the web application BabelDr plays a key role. It is currently used at the HUG mainly on desktop computers. However, in some situations, doctors need to move around and use mobile devices. This work focuses on the adaptation of BabelDr to a more graphically intuitive, efficient and user-friendly text interface. The new resulting web application is called MobileDr. To obtain opinions on the usability of MobileDr, eight doctors evaluated both BabelDr and MobileDr on smartphones. Feedback was provided throughout identical questionnaires. Results show a considerable increase in the general satisfaction rate in favor of MobileDr.