UI/UX analysis & design for mobile e-commerce application prototype on Gramedia.com

Mobile-based e-commerce application has begun to gain its trend. Gramedia as one of leader bookstore in Indonesia plans to create a mobile app that is accessible to its customers. The tendency of Gramedia's customer that starts accessing Gramedia.com from their gadgets is one of the main reason. Task Centered System Design (TCSD) is a method in building Human Computer Interaction that is useful to identify task-requirements and user needs. This method has been used to build the prototype. The prototype has met the requirements as the User Acceptance Test (UAT) shows that 80% acceptance whilst another 20% is accepted with notice. The method of System Usability Scale (SUS) performs a final score 80.9 showing that its usability quality is high.