SkyLaunch is the app I use to keep an eye on rocket launches. It shows the next liftoff, a countdown, the launches coming up, the history of the pads they fly from, and a short run of space news. Version 2.5 is the one that had to learn a new shape.
Phone Duo is a phone until you open it. Closed, the cover display is a normal phone screen. Open, the inner display is wide enough that a layout designed for a pocket starts to look wrong. A launch card that feels right in one hand becomes a long, empty bar. The stats on a launch pad, Total, Success, and Years, drift so far apart they stop reading as a group.
So 2.5 follows the window instead of assuming a single phone width. On the closed cover, Launches and Launch Pads stay a single column. On the open inner display, those same lists sit two across, and each card stays only as tall as its contents. The countdown, the reminders, and the news are the same. The screen around them is what changed.
If you already have SkyLaunch, update to 2.5. If you have an iPhone Duo, open it on the Launches tab and you can see the difference immediately.