Usability Evaluation of the Participatory-based KMS Sawit Mobile Application

KMS Sawit is a mobileapplication created to increasing the productivity of Indonesian people's palm oil plantations. So far, IPB has completed the KMS Sawit 1.0 application whose user interface has been integrated with the back-end. However, for the KMS Sawit to be launched to public, the user interface and functionality of the application need to be tested. This is to determine the usability level of the application. Method for usability evaluation combine CTA test, the concept of Severity Ratings, and SUS test. CTA test to find out the problems that may occur when using the application. The concept of Severity Ratings used to assess the priority of the problems. While the SUS test to determine the level of acceptance or convenient when using the application. Recommendations for improvement are made by selecting problems with high priority to be resolved. Later every problems are classified. Thus, in formulating solutions, developers can be more focused. Retesting was carried out after the application was repaired, and it was found that the respondents did not experience similar problems. The overall score of SUS also increased on the retest, from 71,667 to 80,625.