IDEF is a free Android application designed to provide users with essential information about the International Defence Industry Fair, a prominent event in the defence sector. This app serves as a digital companion for attendees and participants, offering details about the fair's schedule, exhibitors, and featured technologies. With its user-friendly interface, users can easily navigate through various sections to stay updated on the latest developments in the defence industry.

The application also highlights key events, networking opportunities, and insights from military officials and industry experts. By showcasing a wide array of products and services, including military equipment and defence electronics, IDEF facilitates connections among stakeholders in the defence sector. As the next fair is scheduled for July 2025 in Istanbul, the app is a valuable resource for anyone involved in or interested in the defence industry.