This study constitutes the second phase (II) of a research that aims to design, implement and evaluate a web-App for the teaching and learning of physical education (PE) in CLIL. The objective of the study is to design the prototype of the web-App through the analysis of current web-Apps related to the creation and sharing of educational materials, the description of the indicators for the personalization of the content, the selection of the most appropriate technological tools, and to achieve its construction applying the most relevant pedagogical and technological aspects. The design-based research methodology (DBR) has been used for the elaboration of the web-App and the fulfilment of the proposed objectives, with the aim of introducing a transformative technological element that responds to the needs of the teachers. The result has been the creation of a platform where users can create, share and explore PE sessions in CLIL that have the key elements for success.