Nowadays, web is gaining importance as a platform which provides different services and applications for facilitating the users. Further what are the significant aspects in developing these applications for student's perspective? How these services helps to gain maximum resources with less effort as Cloud computing offering to the users e.g. software as a service. Cloud computing means computing in remote locations as Google Apps presents Cloud computing as an idea for future to provide the web based services for the users. There are different types of cloud computing shapes, plate form as services, software as a service, and hardware as a service. Author evaluates the usability of one of cloud based application to find out its usability issues and advantages for users and particularly focused on interactivity, privacy, and reliability issues.