User Interface/User Experience (UI/UX)  design is very important because with a good design that meets user needs, it can make users feel comfortable when using a product. One example is the Academic Information System (SIA), if the design of the SIA is not user friendly, it will have an impact on both the user and the system. Such as input errors, missing information, difficulties in using it. The purpose of conducting UI / UX analysis and design at SIA Universitas Jenderal Soedirman is to solve the problems experienced by users today. Users involved in this research are students. Design is made using the Design Thinking method and for the testing using Usability Testing.

Micro, small and medium enterprises (MSMEs) have an important and strategic role in national economic development. Purbalingga Regency has an area of 777.64 Km2 consisting of 18 Subdistricts with contours of the region which mostly consist of mountains, access to communication and dissemination of information regarding the existence of job vacancies, Micro, Small and Medium Enterprises (MSME) products are absolutely necessary so that the existence of Micro, Small and Medium Enterprises (MSMEs) can improve the standard of living and the economy and equalize employment, especially in the Purbalingga region. The application made in this study is an android based application that can be used by entrepreneurs in the Purbalingga region to register their MSMEs and inform and process job vacancies. The application developed based on the REST (Representational State Transfer) architecture is proven to facilitate the process of data exchange between platforms and systems.

"SPOTLESS" is an Android-based mobile application that provides car wash services to assist customers in ordering car wash appointments and vehicle wash pick-up services at the customer's desired place. "SPOTLESS" can be a solution for car users to avoid long queues for car washing or the lack of time to take their car directly to the washroom. The increasing demand for vehicle washing services affects business competition in this business, causing many customers to complain because they have to wait in queues for too long, disrupting customers' routine activities. To improve customer satisfaction, the interface is designed using the design thinking method, which was tested using the eye-tracking method through 5 participants to determine the feasibility level from the user's side After 3 iterations of testing using Maze, we got a usability score of 86 which is included in the high usability category.

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