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Test multiple windows

Updated: Aug 31, 2026

Meta Spatial Simulator runs several app panels together. Use it to check how your app behaves when it shares the screen, moves to the background, and comes back.

The control bar

Every app panel has a control bar beneath it. The bar is collapsed into a small pill until you hover it. Expanded, it shows:

Back, which navigates back inside the app
The app title
Close app, which closes the app

A Meta Spatial Simulator app panel with its control bar resting as a small collapsed pill beneath the panel

The same control bar expanded on hover, showing a back arrow, the app title Gallery, and a close button

Go Home

Settings → Go Home minimizes the app in the foreground and returns you to the home screen. The app keeps running in the background.

Window Manager

Window Manager is the overview of everything running. Open it three ways:

Settings → Open Window Manager
The app-switch key on your keyboard
Show all, on the pill that appears when apps are running in the background

The pill reads +N background apps and counts what is running out of view.

The overview pill at the top of the simulator reading plus one background app, with a Show all button beside it

In the overview you get a grid of running apps, where you can:

Select a tile to bring that app forward
Hover a tile to enlarge it
Close a single app with the X in the corner of its tile
Close everything with Close all

The Window Manager overview grid, with a Close all button and a close X on the hovered tile

How many panels stay visible

The simulator shows one foreground app plus up to three background panels. Beyond that, apps keep running and stay tracked, but their panels stay hidden until you bring them forward from Window Manager. This ceiling is a limit of the simulator’s screen space, not the app limit on a physical device.

The Store app in the foreground of Meta Spatial Simulator with three dimmed background panels stacked behind it

Child windows

A child window is positioned so the combined parent and child extent stays within the app bounds. It can sit partly or entirely outside its parent panel, so do not rely on it staying within the parent. A child window is destroyed when its parent is.

Immersive apps

The simulator renders 2D panels only. Launching a fully immersive app raises a dialog reading Immersive apps aren’t supported yet, and the app does not start. Test immersive builds on a physical device or the Meta XR Simulator instead.