Abstract
Social networks have recently become widely used throughout the world. From websites accessed on computers to applications accessed on mobile phones, social networks have attracted millions of users in various categories and on numerous platforms. Improving the usability of social network mobile applications is of paramount importance, especially for elderly people that suffer from age-related problems. Usability is a quality attribute that supports the success of applications. Several methods are used to assess the usability of mobile applications. The aim of this paper is to evaluate the usability of Twitter applications using the Android platform. The evaluation method used the tool Morae to gather data from the perspective of users. This empirical study focuses on elderly Arab users. It highlights a set of recommendations that have the potential to improve the usability of Twitter applications on the Android platform for elderly Arab users.