The Alunalun application is an Android-based application specifically intended as a representation of the alun-alun.info catalog portal. The Alunalun.info portal is a service that attempts to collect and briefly publish various kinds of Indonesian cultural objects in a web application.The cultural riches of the Indonesian nation must continue to be published sustainably and openly. This need must be answered with web technology that makes it easier to manage data and publish it collaboratively. The Semantic Web Framework is one of the infrastructures that answers these needs. The Alunalun.info project produces various ontology models for Indonesian cultural objects. The database represents how each object can be built in an application as well as its relationships. We hope that the Alunalun.info mobile application and platform can be a contribution for the Indonesian people to continue to encourage tolerance amidst the rich cultural diversity in Indonesia.