Why and when to close running apps
A running app is one that is open and using your device's resources — memory, processing power, and battery — even if you are not actively looking at it. Closing apps you are not using frees up those resources so your device runs faster and your battery lasts longer. On a phone or tablet, this matters more than on a computer because the device has less power to begin with.
You do not need to close every app constantly. Modern devices are built to manage multiple running apps. But if your device feels slow, your battery drains quickly, or an app is frozen or misbehaving, closing it and reopening it often fixes the problem. Closing an app does not delete it — it just stops it from running in the background.
Key Takeaways
- On Windows, use Alt+Tab to see running apps, or open Task Manager by pressing Ctrl+Shift+Esc to close apps that are frozen or using too much memory.
- On Mac, press Command+Tab to switch between apps, or use Force Quit from the Apple menu to close an app that is not responding.
- On iPhone, swipe up from the bottom of the screen (or swipe down from the top right on newer models) to see open apps, then swipe up on the app card to close it.
- On Android, swipe up from the bottom to see recent apps, then swipe up on the app you want to close, or use Settings to force stop an app.
- Restarting your device closes all running apps at once and clears temporary memory, which often solves slowness or freezing.
Closing apps on Windows
The simplest way to close an app on Windows is to click the X button in the top right corner of the window. This works for most programs. If the X button is not visible or the app is frozen, use Task Manager instead.
To open Task Manager, press Ctrl+Shift+Esc on your keyboard. A window will appear showing all running apps and how much memory and processing power each one is using. Find the app you want to close, click on it once to select it, then click the End Task button at the bottom right. The app will close when ready. If an app says "Not Responding" next to its name, it is frozen — End Task is the only way to close it.
You can also open Task Manager by right-clicking the taskbar at the bottom of your screen and selecting Task Manager from the menu. This takes one extra step but works the same way.
Closing apps on Mac
To close an app on Mac, click the red circle button in the top left corner of the window. You can also press Command+Q while the app is active (in focus). Both methods close the app completely.
If an app is frozen and will not close, use Force Quit. Press Command+Option+Esc to open the Force Quit window. Select the app that is not responding and click Force Quit. The app will close when ready, though you may lose any unsaved work in that app.
You can also reach Force Quit from the Apple menu in the top left corner of your screen. Click the Apple logo, then select Force Quit from the dropdown menu.
Closing apps on iPhone
On iPhone, most apps close automatically when you switch to a different app or lock your phone. But you can manually close an app by viewing your open apps and swiping them away.
To see your open apps, swipe up from the bottom of the screen and pause — do not swipe all the way to the top. You will see cards showing each app that is currently running. Swipe up on any app card to close it. On newer iPhones (iPhone X and later), swipe down from the top right corner of the screen instead, where the notch or camera cutout is located.
Closing apps this way does not delete them from your phone. The app is still installed and you can open it again at any time by tapping its icon on your home screen or in the App Store.
Closing apps on Android
On Android, swipe up from the bottom of the screen to see your recent apps — the ones you have opened recently. You will see cards or thumbnails for each app. Swipe up on the app card you want to close, and it will disappear from the list.
If an app is frozen or misbehaving, you can force stop it through Settings. Open Settings, go to Apps (or process Manager depending on your phone), find the app in the list, and tap it. Then tap Force Stop. This closes the app when ready and clears any temporary data it was holding.
Like on iPhone, closing an app does not uninstall it. You can open it again by tapping its icon on your home screen or in the Google Play Store.
When to restart your device instead
If your device is running slowly or multiple apps are misbehaving, restarting is often faster than closing apps one at a time. Restarting closes all running apps, clears temporary memory, and gives your device a fresh start.
On Windows, click the Start menu and select Shut Down, then turn the device back on. On Mac, click the Apple menu and select Shut Down. On iPhone or Android, hold down the power button until a shutdown menu appears, then slide or tap to power off. Wait a few seconds, then press the power button again to turn it back on.
Restarting takes a few minutes but solves most slowness and freezing problems. If your device is still slow after a restart, the problem may be a hardware issue or too many apps installed, not just apps running in the background.
Frequently Asked Questions
Will closing an app delete my files or data?
No. Closing an app stops it from running but does not delete the app itself or any files you created in it. If you had unsaved work open in the app, that work will be lost — but your saved files remain on your device. Always save your work before closing an app.
Why does an app keep running after I close it?
Some apps are designed to run in the background even after you close them — messaging apps, email, and music players do this so they can notify you or keep playing. If you want to stop this, go to your device settings and turn off background activity for that app, or uninstall it entirely.
Is it bad to close apps frequently?
No. Closing apps does not harm your device. However, constantly closing and reopening the same apps uses more battery than letting them stay open, because each startup takes power. Close apps only when your device is slow or an app is misbehaving.
What is the difference between closing an app and force stopping it?
Closing an app is a normal shutdown — the app saves its state and closes cleanly. Force stopping is a hard stop used when an app is frozen or not responding. Force stop closes the app when ready without saving, so you may lose unsaved work, but it works when normal closing does not.
Can I close multiple apps at once?
On Windows, you can select multiple apps in Task Manager by holding Ctrl and clicking each one, then clicking End Task. On Mac, you can use Force Quit to close one app at a time. On phones, you swipe each app individually. The fastest way to close all apps is to restart your device.