What blocking an app actually does

Blocking an app stops it from running, sending notifications, or using your device's resources — but the app itself stays installed. On most phones and computers, you have several ways to block apps depending on what you want to prevent: stopping notifications, preventing background activity, restricting data use, or keeping someone else from opening it.

The method you choose depends on your situation. If you want to stop seeing notifications from a work messaging app during evenings, that is one setting. If you want to prevent your child from opening a game, that is a different tool. If you want to stop an app from draining your battery in the background, that is yet another. This guide covers the most common blocking methods for Android phones, iPhones, Windows computers, and Macs.

Key Takeaways

  • Blocking an app stops it from running or notifying you, but does not remove it from your device — uninstalling is the only way to fully remove it.
  • On Android, you can block notifications in Settings > Apps, disable background activity, or use parental controls to prevent someone from opening an app.
  • On iPhone, blocking notifications happens in Settings > Notifications, and parental controls use Screen Time to restrict app access.
  • On Windows, you can disable startup apps in Task Manager, block notifications in Settings, or use Family options to restrict app use for other users.
  • On Mac, System Settings lets you control notifications and login items, and parental controls restrict app access through Screen Time.

Blocking notifications on Android

Open Settings and go to Apps (sometimes called Application Manager depending on your phone brand). Find the app you want to block and tap it. Look for Notifications and toggle it off. This stops the app from sending you alerts, but the app can still run in the background.

If you want more control, tap Notification settings instead of just toggling the switch. You can silence specific notification types, turn off sound and vibration, or hide notifications from the lock screen while still letting them appear in your notification drawer. This is useful if you want to see messages from an app but do not want constant alerts interrupting you.

Blocking background activity on Android

Apps running in the background drain your battery and use your data even when you are not actively using them. Go to Settings > Apps, find the app, and look for Battery or Power management (the exact name varies by phone). Tap Battery optimization or Unrestricted and change it to Restricted or Optimized.

You can also go to Settings > Battery > Battery usage to see which apps are using the most power. Apps at the top of that list are the ones draining your device fastest. Restricting them will noticeably improve battery life. Note that some apps (like messaging or email) may not work properly if you restrict them too much, so test after making changes.

Blocking apps on iPhone

To block notifications, open Settings > Notifications and find the app in the list. Tap it and toggle off Allow Notifications. You can also choose to allow notifications but turn off sounds, badges, or banners — this way you can check the app when you want without being interrupted.

To prevent someone else from opening an app on your iPhone, use Screen Time. Go to Settings > Screen Time, tap App Limits, and select the apps you want to restrict. You can set a time limit (the app closes after the limit is reached) or use Restrictions to block an app entirely. You will need to set a Screen Time passcode so the other person cannot change these settings.

Blocking apps on Windows

To stop an app from launching automatically when you start your computer, open Task Manager (press Ctrl + Shift + Esc). Go to the Startup tab, find the app, right-click it, and select Disable. This does not block the app from running — it just prevents it from starting on its own.

To block notifications, go to Settings > System > Notifications and scroll down to find the app. Toggle off Notifications for that app. If you want to prevent another user account on your computer from opening an app, go to Settings > Accounts > Family & other users, select the user, and click Manage family settings online. From there you can set app restrictions through your Microsoft account.

Blocking apps on Mac

To block notifications, go to System Settings > Notifications, find the app in the list, and toggle off Allow notifications. You can also choose to allow notifications but turn off sounds or banners if you want to see them only when you check manually.

To prevent an app from launching at startup, go to System Settings > General > Login Items and find the app in the list. Click the minus button to remove it. If you want to restrict app use for another user on your Mac, go to System Settings > General > Parental Controls, select the user, and choose which apps they can open. You will need to set a parental controls password.

The difference between blocking and uninstalling

Blocking stops an app from running or notifying you, but the app remains on your device taking up storage space. Uninstalling removes the app completely. If you never plan to use an app again and want to free up space, uninstalling is the better choice. If you might use it later or want to keep it but stop it from bothering you, blocking is enough.

On most devices, you uninstall by going to your app list, pressing and holding the app, and selecting Uninstall or Remove. On iPhone, you can also go to Settings > General > iPhone Storage, tap the app, and select Offload App (which keeps your data) or Delete App (which removes everything). On Windows and Mac, you typically go to your app list or use the built-in uninstall tool.

Frequently Asked Questions

Can I block an app without uninstalling it?

Yes. Blocking stops an app from running, sending notifications, or using background resources, but leaves it installed. You can re-enable it anytime. Uninstalling removes it completely from your device.

Will blocking an app stop it from using my data?

Blocking notifications will not stop background data use. To prevent an app from using data in the background, you need to restrict its background activity in your device settings or turn off its permission to use mobile data. On Android, go to Settings > Apps > Permissions > Data usage. On iPhone, go to Settings > Cellular and toggle off the app.

What happens if I block a system app?

System apps (like Settings or Phone) cannot be fully blocked or uninstalled on most devices — they are required for your phone to work. You can disable notifications from them or restrict their permissions, but not remove them entirely.

Can I block an app for just one user on my device?

Yes, if your device has multiple user accounts. On Windows and Mac, parental controls let you restrict which apps each user can open. On Android and iPhone, you can set up a separate user profile or use parental controls (Screen Time on iPhone, Family Link on Android) to restrict apps for specific people.

If I block an app, will it still send me messages?

Blocking notifications stops alerts, but the app can still receive messages in the background. When you open the app, you will see all the messages that arrived while notifications were blocked. If you want to prevent the app from receiving messages entirely, you need to uninstall it or disable its internet permission.