The app is a one-to-one video calling application that uses the Video SDK to enable real-time communication. It allows users to create and join meetings, engage in audio and video conversations, and share their screens. The app has a user-friendly interface with features such as a joining screen for creating or joining meetings, a meeting screen displaying participants like Whatsapp view, and local participant views that can be mini-view or large-view based on the number of participants. The app also handles events such as meeting join/leave and participant join/leave, allowing users to manage their connections effectively. When the app is closed, it releases resources to avoid memory leaks.