Courtly builds fair, balanced badminton doubles matches for your session, automatically rotating partners and courts so everyone plays evenly and nobody sits out too long. Run a social round robin, Americano or Mexicano club night without the spreadsheet: add your players, set your courts, and generate rounds in seconds. Handle latecomers and early leavers on the fly, and share the live schedule with everyone by link. It also works great for pickleball and tennis doubles rotations. Free to use, no sign-up required.