Why you should close apps instead of just leaving them open
Closing apps properly stops them from running in the background and using your device's memory and battery. When you straightforward switch away from an app or press the home button, the app often keeps running — it just moves out of sight. This drains your battery faster, slows down your device, and can cause apps to freeze or crash when you need them.
Properly closing apps also stops them from collecting data or sending notifications when you are not using them. If an app is misbehaving — running slowly, crashing, or using too much battery — closing it completely and reopening it usually fixes the problem. Think of it like restarting a stuck program on your computer: a full close and reopen clears out whatever went wrong.
Key Takeaways
- On iPhones and iPads, swipe up from the bottom of the screen to see all open apps, then swipe up on each one you want to close.
- On Android phones, open the recent apps menu by swiping up from the bottom or tapping the square icon, then swipe up on each app to close it.
- On Windows computers, click the X button in the top right corner of any app window, or press Alt+F4 to close the active window.
- On Mac computers, click the red circle in the top left corner of the app window, or use Command+Q to close the entire app.
- Closing apps regularly keeps your device running faster and prevents battery drain from background activity.
Closing apps on iPhone and iPad
To close apps on an iPhone or iPad, swipe up from the very bottom of the screen. You will see a row of app cards showing all the apps currently running. Each card shows a thumbnail of what the app looked like when you last used it.
Find the app you want to close and swipe upward on its card. The card will disappear, and the app is now fully closed. You can close multiple apps this way — just swipe up on each one. If you want to close all apps at once, swipe up on each card one by one. There is no single button to close everything, so you will need to do them individually if you want them all gone.
If you have an older iPhone with a home button (iPhone 8 or earlier), double-press the home button instead of swiping from the bottom. The same app cards will appear, and you swipe up on each one to close it.
Closing apps on Android phones
On most Android phones, swipe up from the very bottom of the screen to open the recent apps menu. You will see cards for all the apps you have used recently. Some Android phones have a square icon at the bottom right instead — tap that to open the same menu.
Swipe upward on any app card to close it. The card disappears and the app stops running. You can close as many as you want this way. Some Android phones also show a "Close all" button at the bottom of the screen — tap that to close every app at once, though you will usually want to keep at least one or two open.
If your phone has physical buttons, you can also press and hold the power button until a menu appears, then tap "Power off" or "Restart" to close everything and restart your phone. This is more drastic than closing individual apps, but it fixes most problems when apps are crashing or your phone is running slowly.
Closing apps on Windows computers
To close an app on a Windows computer, look for the X button in the top right corner of the app window. Click it once, and the app closes when ready. If the app has unsaved work, it will usually ask you to save before closing.
You can also close the active app by pressing Alt+F4 on your keyboard. This works for almost any program and is faster than moving your mouse to the X button. If you have multiple windows open from the same app, Alt+F4 closes only the current window — you will need to press it again to close the next one.
If an app is frozen and will not close, press Ctrl+Alt+Delete to open the task manager. Find the frozen app in the list, click it once to select it, then click "End Task" at the bottom right. The app will force-close when ready. This is safe to do — it just stops the app from running without saving any unsaved work.
Closing apps on Mac computers
To close an app on a Mac, look for the red circle button in the top left corner of the app window. Click it once, and the app closes. If the app has unsaved work, it will ask you to save before closing.
You can also close the active app by pressing Command+Q. This is the fastest way and works for almost any program. Command+Q closes the entire app, not just one window — if you have multiple windows open from the same app, they all close at once.
If you only want to close one window but keep the app running in the background, press Command+W instead. This closes the current window but leaves the app open. This is useful if you have multiple documents open in the same app and only want to close one.
If an app is frozen and will not close, press Command+Option+Escape to open the force quit menu. Find the frozen app in the list, click it once, then click "Force Quit" at the bottom right. The app will close when ready without saving.
When to close apps versus when to leave them running
Close apps when you are done using them for the day, when your device is running slowly, or when an app is crashing or misbehaving. Closing apps regularly — even once a day — keeps your device running faster and your battery lasting longer.
You do not need to close every app the moment you stop using it. If you use an app several times a day, like email or a messaging app, leaving it running in the background is fine and actually more convenient. The battery drain from a few background apps is small. Close apps only when you notice your device slowing down, your battery draining quickly, or an app acting up.
Some apps, like fitness trackers or music apps, are designed to run in the background and will not work properly if you close them. Check the app's instructions if you are unsure. Most everyday apps like social media, news, or games can be closed without any problem.
What to do if an app will not close
If an app will not close when you try, it is usually frozen. On iPhone or iPad, try closing it again using the app switcher — sometimes it takes a second attempt. If it still will not close, restart your phone by holding down the power button until "Slide to Power Off" appears, then slide to turn it off. Wait a few seconds, then press the power button again to turn it back on.
On Android, if an app will not close, open Settings, tap Apps or process Manager, find the frozen app, and tap "Force Stop." This is stronger than closing it normally and will stop the app even if it is stuck. On Windows, use the task manager (Ctrl+Alt+Delete) and click "End Task." On Mac, use force quit (Command+Option+Escape) and click "Force Quit."
If an app keeps freezing or crashing after you close and reopen it, the app itself may have a problem. Try restarting your device completely — this often fixes app crashes. If the problem continues, uninstall the app and reinstall it fresh from your app store. A fresh install usually solves persistent crashes.
Frequently Asked Questions
Does closing an app delete my data or unsaved work?
Closing an app does not delete any data saved inside the app — your photos, messages, notes, and settings stay there. However, if you have unsaved work open in the app (like a document you were typing), that unsaved work will be lost when you close. Most apps ask you to save before closing if you have unsaved changes.
Will closing apps make my device faster?
Yes, closing apps frees up memory and stops background activity, which makes your device noticeably faster if you have many apps running. If your phone or computer is running slowly, closing all apps and restarting usually helps. The effect is most noticeable on older devices or phones with less memory.
Can I close an app and then reopen it without problems?
Yes, closing and reopening an app is completely safe and often fixes problems like freezing or crashing. The app will start fresh and work normally. You will not lose any saved data — only unsaved work in progress is lost.
What is the difference between closing an app and uninstalling it?
Closing an app just stops it from running — the app is still on your device and you can open it again anytime. Uninstalling removes the app completely from your device, and you would need to read it again from your app store to use it. Close apps to save battery and memory; uninstall apps you no longer want.