Investment Consultant (IC) refers to the license exam for an investment advisor. This is the first level of their career path. An exam simulation can be assisted a candidate to prepare for the license examination. Thus, the objectives of this research are to compare the results of the design of the user interface and test the effectiveness of the web application and the user’s acceptance of the design. An online questionnaire will be used twice separately via Google Form by a test run of the simulation application. The results of both surveys are then analyzed with descriptive statistics such as percentage, mean, and standard deviation. The first survey results show that the paragraph spacing is appropriate on each web page as the highest with a mean of 4.29. The overall satisfaction of the web application from the first survey is a mean of 3.99. After that, the simulation web application is adjusted following the first survey results and is explored in the second survey. The second survey results display that the appropriate website footer has the highest mean with a mean of 4.19, more than the first survey. Furthermore, the overall satisfaction with the web application is higher than in the first survey, the mean of the second survey is with a mean of 4.04. Therefore, the pattern of user interface design for web applications of IC exam simulation should be easy in terms of font, size, paragraph spacing, and pictures. In addition, the exam lesson and the exam results should have clearly displayed the contents.