The official app for C++ Under the Sea 2025 gives you seamless access to Social feed, Attendees, Chat, Connection Center, Swipe, and Companies functionality to keep you connected and engaged throughout the event.

C++ Under the Sea is an international C++ conference in Breda, the Netherlands, featuring industry leaders and speakers from around the world. The main conference is two days, with two simultaneous tracks of talks October 9 - 10 2025. Pre-conference workshops are held on October 8.