Pack-Up! is a proposed mobile application that would allow backpackers to connect with each other based on their locations. It uses GPS to find other travelers near the user and allows them to form instant communities called "packs" to share accommodations, tours, meals, and other travel experiences. Users can search for existing packs or create their own. The app also links to users' social media accounts to provide travel tips and recommendations from other backpackers on a map. The goal is to help travelers overcome common problems of loneliness, budget, safety, and unpredictability by connecting them with others nearby.