The College of Information and Communications Technology of Bulacan State University offers Mandarin Chinese as a foreign language course in one of its programs. The main objective of this study is to develop a web application that focuses on giving Mandarin Chinese dictionaries, lessons, assessments, and tests. Upon the development of the web application, topics under basic Mandarin Chinese, covering Hànyǔ Shuǐpíng Kǎoshì (HSK) Levels 1 and 2, are considered as its contents since they contain essential topics for learning Mandarin Chinese. The web application for basic Mandarin Chinese was evaluated by its intended end-users and technical experts in web application development using the standard software quality evaluation criteria based on ISO/IEC 25010. The acceptability ratings of intended end-users and technical experts are 4.56 and 4.58, respectively, with a descriptive interpretation of Extremely Acceptable. These ratings show that the Mandarin Chinese language web application was developed well, with appropriate functionalities, features, and content. Upon its implementation, this Mandarin Chinese language web application may be used as an additional tool in teaching and learning Mandarin Chinese.