Low-Code Development Platform (LCDP) is a digital platform that provides a variety of applications that can be used to develop software very quickly by eliminating the efforts of traditional programming methods. The development of this technology is an evolution of the fourth-generation language, opening opportunities for research by making LCDP a tool that can be applied in various fields. The Use Case Point method is one of the algorithmic methods that are widely used in estimating software development, this method uses the use case where use cases are very often used in performing software design as the main tool in measuring how much effort is needed to develop software, in this paper try to test whether the use case point method is accurate to estimate software development with LCDP, testing is carried out on the development of letter management applications using LCDP testing It was done using two methods, namely Mean Magnitude of Relative Error (MMRE) and Mean Magnitude of Error Relative (MMER) the findings of this study show MMRE of 3,57 and MMER of 0.78, in this case the use case point method is inaccurate for software development using a low-code development platform.