Before users start using an application for the first time, cognitive style estimation will be conducted. We have used the Verbal-Visual Learning Style Rating (VVLSR) questionnaire, intended to tap the cognitive perception style [15]. The VVLSR questionnaire is an original one-item rating task used to estimate visualize-verbalizer style dimension using a single question [15]. The question is: “In a learning situation sometimes information is presented verbally and sometimes information is presented visually. Please check mark indicating your learning preference” [15]. The answers rate the preference for visual versus verbal learning on a 7-point scale, as shown in Figure 2. The process of collecting of all VVLSR answers from the application users will fill the user profiles database that is stored in the mobile cloud. Verbalizer are users that have provided answers counted -3,-2,-1; visualizers are users with answers counted +3,+2,+1; and bimodal users provide count 0, which are saved in the user profiles database.