MLB redesigns app for foldable iPhone Duo ahead of World Series

MLB launched a redesigned app built for the iPhone Duo's foldable screen in time for Game 1 of the World Series on October 23, 2026. Fans can watch on the 5.4-inch cover display or 7.6-inch inner screen, with a prop-up mode pairing live video and real-time box scores; AI adds context on plays and players. The league built the experience in 44 days after Apple announced the Duo on September 9.

• MLB built the iPhone Duo app in 44 days after the September 9 announcement
• Prop-up mode shows live video on top and updating box scores below
• iPhone Duo has a 5.4-inch cover screen and 7.6-inch inner display
• AI generates extra context on each play, player and game situation