AR technology allows users to simultaneously experience real and virtual worlds by overlaying digital information onto their environment. Integrating AR into social networks can transform communication methods. Users can create and share text, images, videos, and audio notes linked to specific locations or objects, which others can view when they visit those places. This merges physical spaces with digital content, enhancing social interactions. This research developed a novel AR-based social networking application that enables users to create and share location-based AR notes both indoors and outdoors. The system leverages Google’s Geospatial API and ARCore SDK for outdoor notes using GPS, indoor notes via feature anchors, and object notes through ORB-based recognition. Additionally, the app includes various AR features such as quizzes, games, and navigation, offering diverse experiences. This study demonstrates how AR technology can enhance social networking, enabling users to actively engage with AR in real-life situations and creating a new paradigm of integration between the physical and virtual worlds.