This work seeks to structure a proposal for an application to the small producer that assist in the association of crops in agroforestry systems. To use the app you will need a smartphone or tablet that can function without dependence on the internet because it will have a database with the necessary characteristics for an efficient association. For this, it was made an exploratory search that assisted in the bibliographical conceptualization of agroforestry systems and in identifying the characteristics of the relevant cultures in an association. To illustrate the operation of the application was chosen as the main culture and rubber trees, papaya, beans, peanuts, rice and bananas as the joined cultures. When using the application introduces the following information: type of culture, climate, and Earth. By crossing the characteristics related to the nutrients, water and plant family cycle raises the name of plants that can be joined and the spacing that should be on the plantation.