"Siedlce" is a comprehensive mobile app that serves as a guide to the eastern areas of Mazovia, offering information on history, local attractions, and six scenic bicycle routes. Users can explore cultural monuments, parks, and nature reserves while benefiting from GPS navigation. The app features quests, an event calendar, and various tools for adventure and discovery in a beautiful natural setting. It also includes a planner, QR code scanner, and weather forecast access, all designed for offline use on Android and iOS devices.