With the increase on the use of mobile devices in children below the ages of seven and the expansion of app stores, efforts to produce different mathematic learning mobile applications have been made. Children that age, however, are not always able to effectively use and commit with such application due to interaction barriers with them. In this paper, we present the design process and description of a mathematics learning application meant to overcome these barriers. Applying HCI techniques, a mobile application that implements the Doman Method for early development was designed. Using non-traditional interactions and augmented reality technologies, the system presents an intuitive interface that helps breaking the understanding barrier with children. Finally, we discuss an evaluation carried out by several experts to assess the achievement of a friendly-user and intuitive application design to enhance the engagement of children to the application and as such to the Doman Method.