During the last decade, the way people learn has seen a big shift from the traditional classroom that purely uses printed material to the contemporary classroom that utilizes digital technologies for the teaching material (Al-Emran and Shaalan, 2015). In this paper we present Vault!, an Android mobile app that combines the benefits of mobile learning and relational learning, while at the same time reaps the reward of the community-based learning model existing in parkour. We also provide a theoretical support for parkour as a general-purpose challenge-based educational model, as well as an analysis of popular mobile learning apps, both of them resulting in the design and development of the presented application.