Apps are programs you run on your iPhone that do one specific job
An app is a piece of software designed to run on your iPhone and do one particular thing — send messages, take photos, check the weather, play music, or read the news. Unlike a website you visit in Safari, an app lives on your phone itself. It can work even when you are not connected to the internet, and it can send you notifications or run in the background.
Every iPhone comes with built-in apps from Apple: Phone, Messages, Mail, Camera, Photos, Maps, Calendar, Reminders, Notes, and others. You can also download additional apps from the App Store — Apple's marketplace where third-party developers sell or offer free programs. Once you download an app, it stays on your phone until you delete it.
Apps are different from websites because they are installed directly on your device rather than accessed through a browser. This means they can be faster, work offline, and have deeper access to your phone's features like your camera, location, or contacts — though iOS limits what each app can actually do with that access.
Key Takeaways
- Apps are programs that live on your iPhone and perform a specific function, from messaging to banking to fitness tracking.
- Your iPhone comes with built-in Apple apps, and you can download additional apps from the App Store.
- Apps can run in the background, send notifications, and work without an internet connection, unlike websites.
- Each app you download can request permission to use your camera, location, contacts, or other phone features, and you can see and change those permissions in Settings.
- You manage apps by finding them on your home screen, organizing them into folders, or deleting them entirely.
Where to find and download apps
The App Store is the official place to find apps for your iPhone. Open it by tapping the blue icon with a white stylized "A" made of sticks. From there you can search for an app by name, browse categories like Games or Productivity, or look at what is trending.
When you find an app you want, tap the cloud icon with a download arrow (or the price if the app costs money). You will be asked to confirm with Face ID, Touch ID, or your Apple ID password. Once confirmed, the app downloads and installs automatically. The icon then appears on your home screen or in your App Library.
Some apps are free, and some cost money — usually between $0.99 and $9.99, though some are more expensive. Free apps sometimes show ads or offer in-app purchases (extra features you can buy inside the app). Before you download, read the description and reviews to understand what the app does and whether other users found it useful.
How to organize and find your apps
Every app you download appears as an icon on your home screen or gets sorted into your App Library automatically. Your home screen is the grid of icons you see when you unlock your phone. You can have multiple home screens by swiping left, and you can move apps between them by holding down an app icon, tapping "Move App", and selecting a screen.
To organize apps into folders, hold down an app icon and tap "Edit Home Screen". Then drag one app onto another app to create a folder. You can name the folder anything you want — for example, "Social Media" or "Games". This keeps your home screen less cluttered.
The App Library, accessed by swiping all the way to the right on your home screen, automatically sorts all your apps into categories like Productivity, Entertainment, and Utilities. You can search for an app by swiping down and typing its name, which is often faster than looking through folders.
Understanding app permissions and privacy
When you first open an app, it may ask permission to access your location, camera, microphone, contacts, photos, or calendar. These permissions exist because some apps genuinely need that access to work — a maps app needs your location, a video chat app needs your camera. But you control whether to grant or deny each permission.
You can see and change permissions for any app at any time. Go to Settings, scroll down to find the app name, tap it, and you will see a list of permissions it has requested. A green toggle means the app has permission; a gray toggle means it does not. You can turn any permission off, though the app may not work properly without it.
Apple also shows you when an app uses your location, microphone, or camera with small indicators at the top of your screen. If you see these indicators when you are not actively using the app, it means the app is accessing that feature in the background — which you can investigate and change in Settings if you want.
Deleting apps you no longer use
To delete an app, hold down its icon on your home screen and tap "Remove App", then confirm by tapping "Remove from Home Screen" (which just hides it) or "Delete App" (which removes it entirely). If you delete an app, you can always download it again later from the App Store — your purchase history is saved to your Apple ID.
Deleting an app also deletes the data it stored on your phone, like saved games or local files. Some apps let you back up that data to the cloud before you delete them, so check the app's settings if you want to keep your progress or information.
If you want to hide an app without deleting it, tap "Remove App" and choose "Remove from Home Screen". The app stays on your phone and in your App Library, but it will not clutter your home screen.
The difference between apps and websites
A website is something you visit through Safari or another browser — it lives on a server somewhere and you see it through the internet. An app is a program installed on your phone itself. Apps are usually faster because they do not have to load from the internet every time, and they can work offline.
Many companies offer both an app and a website. For example, you can check your bank account through their website in Safari or through their app. The app often has a smoother experience and can send you notifications, while the website works in any browser on any device.
Some apps are just wrappers around a website — they load a website inside an app frame. Others are built specifically for your phone and use its features directly. Reading reviews or trying both can help you figure out which works better for what you need.
Managing storage and app updates
Apps take up storage space on your phone. If you have many large apps (like games or video editors), you may run out of space. You can see how much space each app uses by going to Settings, tapping General, then iPhone Storage. Apps are listed from largest to smallest.
App updates happen automatically by default, but you can change this in Settings under App Store. Tap your profile icon at the top right, then go to Automatic Downloads and turn off "App Updates" if you want to update apps manually instead. Updates usually fix bugs, add features, or improve security, so keeping apps current is a good idea.
If an app is taking up too much space and you do not use it often, deleting it and re-downloading it later is usually the simplest solution. You can also offload an app (which removes it but keeps its data) by going to Settings, General, iPhone Storage, tapping the app, and selecting "Offload App".
Frequently Asked Questions
Can I use the same app on multiple devices with one Apple ID?
Yes. Apps you purchase are tied to your Apple ID, not to a specific device. You can download the same app on your iPhone, iPad, and Mac (if it is available for Mac) without paying again. However, some apps have limits on how many devices can use them at once.
What does it mean when an app says it needs an update?
An update is a new version of the app that fixes problems, adds features, or improves security. Updates happen automatically if you have that setting turned on, or you can update manually by opening the App Store, tapping your profile icon, and tapping "Update" next to the app name.
Can I get a refund if I buy an app and do not like it?
Apple allows refunds within 14 days of purchase if you request one through the App Store. Open the App Store, tap your profile icon, go to Purchase History, find the app, tap it, and select "Report a Problem". You can request a refund there, though Apple does not always grant them.
What happens to my data if I delete an app?
Deleting an app removes the data it stored on your phone — saved games, notes, photos, or other files. If the app syncs to the cloud (like Notes or Photos), that data stays safe in iCloud. For other apps, check if they offer a backup or export option before you delete them.
Why does an app keep running even after I close it?
Apps can run in the background to deliver notifications, play music, or track your location. You can see which apps are running in the background and turn it off in Settings under General, Background App Refresh. Turning this off saves battery but means you may miss notifications.