One Rope is an emerging social self-discipline app built on users' existing social networks. It strengthens users' self-discipline by letting them launch joint challenges and work together to overcome them. On one hand, it boosts self-discipline via users' social circles; on the other, cooperative self-discipline challenges in turn strengthen social bonds, fostering closer relationships. Currently centered around two-person early rising challenges, it aims to give users daily conversation topics during joint early clock-ins, tying them together like a rope. It also hopes users can support each other through difficulties, building even tighter connections~