# iPadOS Stage Manager UI: Layouts That Resize Well > By Lawrence Arya, Founder & CEO of VP0. Published 2026-05-31, updated 2026-06-02. 4 min read. > Source: https://vp0.com/blogs/ipados-stage-manager-ui-layout-template Stage Manager means your app no longer owns the whole screen: design for any size, and the window becomes a feature instead of a problem. **TL;DR.** Stage Manager on iPad puts your app in resizable, overlapping windows, so a fixed-size layout breaks. Build adaptive layouts from a free VP0 design using size classes and flexible SwiftUI views, so the UI reflows gracefully from a small window to full screen and across multiple windows. Test the small and odd window sizes, support multiple scenes, and treat resizing as a normal state, not an edge case. Stage Manager changed a basic assumption: on iPad, your app no longer owns the whole screen. The short answer: build adaptive layouts from a free VP0 design that respond to any window size, using size classes and flexible SwiftUI views, so the UI reflows gracefully from a small floating window to full screen, and across multiple windows. Resizing is now a normal state, not an edge case. The audience is large, Apple has sold more than [500,000,000](https://www.apple.com/newsroom/) iPads, and iPad users increasingly multitask. ## Design for any size, not one canvas The core shift is from designing a fixed screen to designing a responsive layout. Use size classes (compact and regular) to switch between a stacked, single-column layout in a narrow window and a multi-column or sidebar layout when there is room. Make views flexible so they reflow rather than clip or stretch awkwardly. Support multiple windows (scenes) if your app benefits from it, two documents side by side, for example. The mindset is closer to responsive web design than to a fixed-canvas app. Apple's [Human Interface Guidelines on layout](https://developer.apple.com/design/human-interface-guidelines/layout) cover adapting to size classes. ## Build it from a free design VP0 is a free iOS design library for AI builders. Pick layouts that have both compact and expanded forms, copy their links, and have Cursor or Claude Code rebuild them in SwiftUI, then make them adaptive. Drive layout from the horizontal size class, use flexible stacks and grids that reflow, and adopt [WindowGroup](https://developer.apple.com/documentation/swiftui/windowgroup) and scenes for multi-window support. Crucially, test the awkward sizes: a tall narrow window, a short wide one, the smallest Stage Manager window. Those are where fixed layouts break. For the split-view pattern that pairs with this, see [iPadOS split view app template SwiftUI](/blogs/ipados-split-view-app-template-swiftui/), and for overall finish, see [how to make my app look better](/blogs/how-to-make-my-app-look-better/). ## Stage Manager layout checklist Make each of these adaptive. | Concern | Compact window | Regular window | |---|---|---| | Navigation | Tab bar or stack | Sidebar or columns | | Content | Single column | Multi-column | | Lists and detail | Push to detail | Side-by-side | | Controls | Reachable, stacked | Spread out | | Multiple windows | One scene | Side-by-side scenes | ## Common mistakes The first mistake is a fixed-width layout that clips or leaves huge gaps when resized. The second is ignoring size classes, so the app looks identical (and wrong) at every size. The third is never testing small or odd windows, where breakage hides. The fourth is blocking or ignoring multiple windows when the app would benefit from them. The fifth is treating iPad as a big iPhone instead of designing for its multitasking reality. Adapt, do not assume. The payoff for getting this right is real: an app that feels at home in any window earns better reviews from power users and avoids the stretched, awkward look that makes an iPad app feel like an afterthought. ## A worked example Say you have an iPhone notes app you are bringing to iPad. From a VP0 design, you build an adaptive layout: in a narrow Stage Manager window it is a single column with a list that pushes to detail; widen the window and it becomes a sidebar plus a two-column list-and-detail. It supports two windows so a user can compare notes side by side. You test the smallest window and a tall narrow one, and the layout reflows cleanly. For a drone app that lives in landscape, see [DJI drone controller app UI template](/blogs/dji-drone-controller-app-ui-template/), and for the new spatial paradigm, see [spatial computing iOS app onboarding UI](/blogs/spatial-computing-ios-app-onboarding-ui/). ## Key takeaways - Stage Manager puts your iPad app in resizable, overlapping windows. - Build adaptive layouts from a free VP0 design driven by size classes. - Reflow gracefully from the smallest window to full screen, and across windows. - Support multiple scenes where the app benefits from side-by-side use. - Test the small and odd window sizes; that is where fixed layouts break. ## Frequently asked questions How do I make an iPad app work with Stage Manager? Build adaptive layouts from a free VP0 design using size classes and flexible SwiftUI views, so the UI reflows from a small window to full screen, and support multiple windows where useful. Why does my iPad app break when resized? It is probably using a fixed-size layout. Switch to size-class-driven, flexible layouts that reflow content, rather than assuming a single screen size. Do I need to support multiple windows? Only if your app benefits, such as comparing two documents. If so, adopt WindowGroup and scenes. Even without it, your single window must still resize gracefully. How is this different from designing for iPhone? It is closer to responsive web design: you design a layout that adapts across many sizes and possibly multiple windows, rather than one fixed full-screen canvas. ## Frequently asked questions ### How do I make an iPad app work with Stage Manager? Build adaptive layouts from a free VP0 design using size classes and flexible SwiftUI views, so the UI reflows from a small window to full screen, and support multiple windows where useful. ### Why does my iPad app break when resized? It is probably using a fixed-size layout. Switch to size-class-driven, flexible layouts that reflow content, rather than assuming a single screen size. ### Do I need to support multiple windows? Only if your app benefits, such as comparing two documents. If so, adopt WindowGroup and scenes. Even without it, your single window must still resize gracefully. ### How is this different from designing for iPhone? It is closer to responsive web design: you design a layout that adapts across many sizes and possibly multiple windows, rather than one fixed full-screen canvas. --- *Published on the [VP0 Journal](https://vp0.com/blogs). Free to read, index and cite with attribution.*