JaGa SEMERU is a free Android application developed by Inoe Abu Muadz for the Social & Communication category. It is a support app for the Early Warning System program that will be used by volunteers and the people living in the danger zone of Mount Semeru. The app offers several features that can help users stay informed and safe in case of a volcanic eruption.

The first feature allows users to monitor Mount Semeru directly through CCTV cameras placed in three different locations: Curah Kobokan, Sumber Sari, and Kajar Kuning. The second feature provides real-time information about the current situation in the Cold Lava and Rain areas of Mount Semeru. The third feature offers a GIS map of the Semeru Mountain Range and live location tracking to help users determine their position. The fourth feature updates the Magma ESDM GIS map, while the fifth feature provides news from REKGS volunteers about the latest events surrounding Mount Semeru. Lastly, the app offers live weather information through its weather map.

JaGa SEMERU is an essential app for people living in the Semeru Mountain area, providing crucial information to help them stay safe in case of a volcanic eruption.