Zestimer on iPhone Duo
Start on the outer display, open iPhone Duo, rotate it, or leave it partially folded for a workout with your hands free. Zestimer adapts the timer, exercise guidance, and controls to the available space while keeping the workout in progress.
On the open inner display in landscape, the timer and upcoming moves appear side by side. In portrait and partially folded positions, the layout adjusts to keep the countdown and controls easy to use. Following Apple’s design guidance for iPhone Duo, native SwiftUI containers handle pane arrangement, system navigation, and avoidance of the active fold. The workout session stays intact as the layout changes.
