The writing covers the development of cognitive abilities in kindergarten children with interactive applications. With the development of new technology there is also a development of games and applications intended for mobile devices which we use on daily basis. Interactive games and applications are more and more nested in our daily routine, most of them being for fun purposes. Their influence on children is already noticeable, kids are rapidly being getting used to use the device and play games but the question remains how much of a positive influence it has on them. Applications used for the development of children are usually in form of games that are subtle in developing children’s mental growth. The applications don't have a precise age they target so the content is usually made easy so the children find it attractive. Applications for the development of children should follow the development program of children, enable gradual development of cognitive abilities and not presented as obligation to kids in order for the child to use it often. Practical part of the writing includes the custom made application prototype used for the development of cognitive abilities in children age three to four. It comprises of three categories in which children’s cognitive abilities are tested and being developed. The categories are colors, numbers, shapes and sizes.