Mobile-wireless gadgets are becoming increasingly important in Kenya, not just as a means of social communication, but also as a medium of learning and instruction. This shift partly exploits the learnability principle in information technology which signifies how quickly a new user can begin efficient and error-free interaction with a system. The learnability principle was originally formulated for computer-based applications intended for adults but currently, children are increasingly becoming the end users. A gap exists in research on the effects of learnability on school-aged children in urban areas of Kenya. Against this backdrop, this study aimed at gathering information on the learnability characteristics of children of different age groups. The research further explored the degree to which the mobile-wireless information systems’ applications software learnability principles are applicable to children in Kenya.