AR Phone, MobiAR and GeoBoids are examples of mobile AR that are based on handheld devices instead of wearable computers and HMDs. As a consequence, the user does not have to carry special hardware which improves mobility. AR Phone[15] is study where a mobile phone with limited processing capabilities is used to provide an augmented reality interface in smart environments. In the AR Phone system highprocessing tasks such as image processing are performed on the AR server and the phone merely performs the role of viewer. MobiAR[16] is Android application that provides tourist information with augmented reality. When users observe the real world through the MobiAR, the view is augmented with information of their location. With multimedia content, users can access useful information to plan their routes in the city. GeoBoids[9] is an exergame that uses AR on smartphones. The game provides Field and Arcade modes where the player has to search and capture virtual GeoBoids creatures in an outdoor real world environment. Interaction between the player and augmented reality objects is simple which is just touch or swipe on the smartphone screen. To our knowledge GeoBoids and Calory Battle AR are the only research outcomes of exergames utilizing mobile AR.