Augmented Reality (RA) combines real and digital image, and it is becoming a new immersive source to provide data building people's knowledge. The research analyses its real possibilities, through a bibliometric analysis carried out on recent research, and a descriptive essay on the characteristics of 100 RA Apps. The results conclude several emerging lines, different user profiles and the most suitable areas for these techniques, the emergence of new immersive methodologies, and their different perspectives. The empirical descriptive essay reveals the limitations that these technologies really offer in the structured construction of knowledge
