POSCOMP Coach is a web platform developed with the aim of collaborating in the preparation of students for POSCOMP, an annual exam promoted by Brazilian Computing Society and used as selection criterion in several Post-Graduation Programs in Computing. The proposed platform has a database with 980 questions, allows personalized simulations, and displays the student’s performance in charts, detailling hits and misses. The functionalities provided by the platform favor the resolution of questions and help in the identification of aspects of the preparation that must be improved.