Abstract. Developing context-dependent applications involves indicating the relevant contextual events and the corresponding actions. Based on an analysis of the usability and expressiveness of three Android apps for developing such applications, we have started a study that aims to identify a general solution able to better represent how users classify the relevant concepts in order to facilitate their manipulation during development. We report on a card sorting experiment carried out with 18 users for this purpose, and an analysis of its results, with sug-gestions for improving current designs and informing future solutions
