Usability and communicability are fundamental to the process of software development and the developer has to be aware of the intelligibility, apprehensibility, ease of use, ease of communication and attractiveness of the software. In assistive software, it is necessary to adjust the development process in order to give the software adaptability to adjust its interface to each user's specific needs. This paper proposes software rudiments within their adaptive interfaces to support cognitive development in autistic children through ludic activities involving planning. Autism is a complex syndrome which compromises social abilities and communication. Therefore, affected children have different behavior issues, requiring adaptive software with adaptive interfaces to accommodate their specific needs identified via interviews with their caregivers, parents and therapists. The adaptive software we propose in this paper was partially developed after consecutive semiotic evaluations and usability inspections on other similar software, considering HCI recommendation for assistive software for children. [ABSTRACT FROM PUBLISHER]