R3101 IAGD Mobile Application, serves as a platform (Android & iOS) that can be utilized by alumni of the Geodesy Student Association at ITB as a communication tool among alumni and as a centralized source of alumni-related information. This application is named R3101 with a philosophical significance, where Room 3101 in the Labtek IXC is the largest classroom often used for gatherings / big classes (including across academic years).