How to Close an App on Any Device: What You Need to Know
Closing an app sounds simple — and often it is. But depending on your device, operating system, and what you're actually trying to achieve, "closing an app" can mean very different things with very different outcomes. Understanding what happens behind the scenes helps you make smarter decisions about when and how to do it.
What Does "Closing an App" Actually Mean?
Most people assume that pressing the home button or swiping away from an app closes it completely. In most cases, it doesn't. Modern operating systems — particularly on mobile devices — are designed to keep apps in a suspended or background state, rather than fully shutting them down.
There are generally three states an app can be in:
- Active/Foreground — The app is on screen and using resources
- Suspended/Background — The app is not visible but remains in memory, paused
- Terminated/Closed — The app is fully removed from memory and no longer running
When you "close" an app on a smartphone by swiping it away from the recent apps list, you're usually moving it from suspended to terminated. On a desktop or laptop, closing a window may or may not quit the underlying process, depending on the operating system.
How to Close Apps on Different Platforms
🖥️ Windows
On Windows, closing a window using the X button in the top-right corner typically quits the app entirely — but not always. Some applications (like messaging clients or system tools) minimize to the system tray instead of fully closing.
To fully terminate an app that isn't responding:
- Press Ctrl + Shift + Esc to open Task Manager
- Find the app under the Processes tab
- Select it and click End Task
🍎 macOS
On a Mac, clicking the red dot (close button) in the top-left corner of a window closes the window but does not quit the application. The app continues running in the background, which is intentional macOS behavior.
To fully quit an app:
- Use Cmd + Q
- Right-click the app icon in the Dock and select Quit
- Use the app's top menu bar: AppName → Quit
For unresponsive apps, press Cmd + Option + Esc to open the Force Quit window and select the stuck application.
📱 iPhone (iOS / iPadOS)
On iPhones and iPads running iOS, apps don't truly "run" in the background the way desktop apps do — iOS aggressively manages memory and suspends apps automatically.
To close an app:
- Swipe up from the bottom of the screen (or double-press the Home button on older models) to open the app switcher
- Swipe the app card upward to dismiss it
Important: Apple and most iOS engineers consistently note that force-closing apps on iPhone is rarely necessary and may actually reduce battery efficiency, since the OS has to reload the app fresh next time rather than resuming a suspended state.
🤖 Android
Android handles app management similarly to iOS, with background apps suspended and managed by the system.
To close an app:
- Tap the Recent Apps button (square or three-line icon, depending on your device)
- Swipe the app card away — left, right, or upward depending on your Android version and manufacturer
Some Android manufacturers (Samsung, Xiaomi, OnePlus, etc.) add their own memory management layers, which can affect how aggressively apps are terminated in the background.
For apps that are unresponsive:
- Go to Settings → Apps
- Find the app and tap Force Stop
When Should You Actually Close an App?
This is where the nuance matters most. The answer depends on what you're trying to accomplish.
| Goal | Should You Force-Close? |
|---|---|
| Free up screen space | Not necessary — use the Home button |
| Fix a frozen/crashed app | Yes — force quit and reopen |
| Improve battery life | Rarely helps on iOS; depends on Android setup |
| Stop an app using data or location | Yes — closing or revoking permissions helps |
| Speed up the device | Usually not — OS manages memory automatically |
| Prevent background notifications | Closing helps, but permissions are more effective |
One common misconception: Routinely swiping apps away to "save battery" can have the opposite effect on both iOS and Android. Restarting a closed app requires more power than resuming a suspended one. The exception is apps that are actively using location services, syncing data, or playing audio in the background — those do consume real resources and may warrant closing.
Variables That Change the Answer
The right approach depends on several factors that vary from user to user:
- Your operating system and version — iOS 16 handles background processes differently than iOS 12; Android behavior varies by manufacturer
- Your device's available RAM — Low-RAM devices may benefit more from manual app management than high-end phones where the OS handles it efficiently
- The specific app — A navigation app or podcast player running in the background is very different from a social media app in a suspended state
- Your use case — Troubleshooting a crash, managing privacy, or extending battery life on a dying charge each call for different approaches
- Third-party customization — On Android especially, custom launchers and OEM software layers change how app closing works under the hood
What works well for someone with an older budget Android phone won't necessarily apply the same way to someone using a recent flagship iPhone or a MacBook with abundant RAM.
The mechanics of closing apps are consistent within each platform — but whether you should close an app, and how often, depends entirely on what you're trying to solve and what's running on your specific device.