Augmented reality is an interactive technology that makes it possible to combine virtual and reality, and to see this combination in the same environment, rather than creating a completely virtual world. Although the ideas on augmented reality has an historical background, its technological development is relatively new. We see that augmented reality applications have been developed in the recent years for wearable technologies and especially for mobile technologies rather than for desktop/laptop computers. Strengthening of mobile technologies with various sensors and hardware and ease of producing mobile application software have led to rapid widespread use of mobile devices in all segments of society. With such spread of mobile technologies, augmented reality applications are downloaded and used by everyone and such applications are even developed without any need to advanced software knowledge.