You can't actually hide apps on your iPhone, but you can make them harder to find. If you can't find an app on your iPhone's home screen, it may still be available in your App Library. Also, some hidden app purchases can be revealed. Here's how to do both.
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Reveal apps that are “hidden” in your app library
Starting with iOS 14, Apple introduced an App Library page on your iPhone that displays an organized list of all the apps installed on your device. You may have an app installed on your iPhone that doesn't appear on your Home screen, but is still accessible in your App Library. If that's the case, you can easily add the app to your Home screen.
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To open your App Library, swipe left repeatedly on the home screen of icons until you reach the last page, then swipe again and the App Library will open. You'll see a grid of icons in different categories representing apps you have installed. Tap the search bar at the top of the screen and type the name of the app you're looking for.
When you find it, long-press on its icon in the results list. In the menu that appears, select “Add to Home Screen.”.
After that, you can go back to your home screen and you will see the icon of the app you just added to your home screen on one of the pages.
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In the future, if you want all your downloaded apps to automatically appear on your home screen, open the Settings app and tap “Home Screen.” Then, add a check mark next to “Add to Home Screen.”
Reveal hidden app purchases on your iPhone
Using your Apple ID settings, it is possible to hide previous purchases of items such as apps. If you can’t find an app you want to download in your Purchase History, open Settings and tap Apple ID at the top. Then, select “Media & Purchases” and tap “Hidden Purchases.”
On the next screen, you'll see a list of purchases you've previously hidden. Tap "Unhide" behind any app you want to reveal again.
After that, the app will appear in your Purchase History (Settings > Apple ID > Media & Purchases > Purchase History). If the app is not already installed on your iPhone, you will need to re-download it from the App Store. Good luck!
Information source: howtogeek.com
