This paper describes the development and implementation of two mobile applications to investigate the use of time and location based systems for delivering information to mobile users. The user study consists of two RSS-based information retrieval widgets to support mobile learning within a higher education environment. The major function of both the mobile applications is to disseminate information surrounding course updates in a context of either time or space, aiming to identify if there is precedence between these two dimensions of context. Results from both quantitative and qualitative data indicate that both applications were evenly helpful for receiving information and both the applications were deemed equally unobtrusive in their personal space, although utilising location information was deemed a less comfortable form of ambient information.