Interlearning is an interactive tool for active learning designed for mobile devices. Its main goal is to provide teachers with some tools to create and publish questionnaires and quizzes which will be solved by students. It is especially designed to be used in the classroom, since it is suitable to obtain an immediate feedback about the learning progress. Moreover, students can also get up-to-date information about their evolution. Aggregated reports are generated in realtime as the students submit their responses to the system. They are conformed by several charts which summarize the results obtained for each question in the quiz, and also a histogram about the global performance of the whole group. Interlearning is comprised by a Web portal for the management of questions, deliveries, and reports, and an Android app for the students. In this paper we provide some details about this tool and we also present some results obtained during the use of Interlearning in the University of Murcia.