Apps developed by us for children of 6 to 10 years old focus on their cognitive abilities. Children of this age are not only able to write and do sums correctly, but they can put the main characteristics of different items in order according to their ‘differences’ and ‘similarities’, they are curious and in search of strong ideals that they can identify with. After developing an app for this age group, we have it tested by primary school children, resulting in a children’s app that is truly appropriate for their age.