Indonesia is a majority Muslim country with a percentage 87.1% of the population. Islam teaches its people to carry out activities that aim to share with the needy; Zakat, Infaq and also Shadaqoh (ZIS). However, zakat collection in 2015 is only 1.3% of it’s potential. Today, the marketing channels of ZIS products is starting to use the internet as the process of digitalizing zakat for communication channel and service channel to achieve efficiency. The most widely used device for internet browsing is smartphone devices. Growth of smartphone users in Indonesia occur along with the increase of mobile application users. Digitalization of zakat provides wider access to donors, fraud avoidance, reduced operational costs and better consolidation of national zakat reports. One of the effort is developing zakat mobile smartphone application which currently still encounters some problems in the development process. This study aims to re-design the User Interface of zakat mobile smartphone applications with the user experience approach for zakat mobile application in order to obtained the best recommended combination of user experience elements that aims to improve user experience of the application. The methods used are performance metrics, Single Ease Question (SEQ) questionnaires, System Usability Scale (SUS) questionnaires, Questionnaire for User Interface Satisfaction (QUIS) questionnaires, and Retrospective Think Aloud (RTA). Based on the results of this research, zakat mobile smartphone applications have low usability rating so there is a need to do re-design by using the TRIZ method. The result of this study is a prototype that meets the perceptions.