Do You Have to Buy an iPhone App for Each Compatible Device?

One iOS app purchase is all you need to make

iOS app licensing

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If you've used enough computing platforms—computers, game consoles, smartphones, or tablets—you've encountered the concept of software licensing, which is the legal and technological tool that entitles you to use the software you buy on a given device.

Sometimes that means you're required to buy the same software more than once if you want to use it on more than one device. 

That isn't the case with iOS devices. It's common to own both an iPhone and an iPad, for example. You can use the same paid app on both devices.

You Only Buy iOS Apps Once

When you buy an iOS app from the App Store, you can use it on as many devices as you want without having to pay a second time as long as the other devices use the same Apple ID. Free apps aren't affected. You can use them wherever you like.

Limitations of iOS App Licensing

The two restrictions on the buy-once-use-anywhere nature of iOS apps are:

  • All devices using your apps must be logged in to the same Apple ID. When you buy an app, it's tied to the Apple ID used to buy it and looks for that on other devices to authorize their use
  • App developers can opt to require users to pay for later versions, usually major upgrades to the app.

Automatic Downloads

One simple way to get your paid apps onto all your compatible devices is to use the iOS automatic download settings. When you make a purchase on any device, the app is installed on all your compatible devices.

For example, on the iPhone, enable automatic downloads like this:

  1. Tap the Settings app.
  2. Scroll to and choose iTunes & App Store.
  3. In the Automatic Download section, move the slider next to Apps to the on position. You can also enable automatic downloads for Music and Books and Audiobooks.

Redownloading From iCloud 

Another way to make sure all your devices have the same apps is to redownload them from your iCloud account. Purchase an app once, and then, on a device that doesn't have that app installed and is logged in to the same Apple ID, go to the App Store app. Tap search and enter the app's name in the search field. When it shows up in the search results, download it. You won't be charged again.

Family Sharing

Apple's Family Sharing feature takes the ability to share apps across devices one step further. Instead of just sharing apps on your own devices, you can share apps on all devices used by your family members—assuming they're linked by Family Sharing. This is a great way to share all paid content: not just apps, but also music, movies, books, and more.

How Software Licensing Works With Other Products

Apple's buy-once-use-anywhere approach to iOS app licensing was unusual when the App Store debuted. In those days, it was common to have to buy a copy of a program for every computer you wanted to use it on.

That's changing. These days, many software packages come with licenses for multiple devices for a single price. For example, Microsoft Office 365 Home edition includes support for five users, each running the software on multiple devices.

This isn't universally true. High-end programs still often need to be licensed on a one-off basis, but more and more, no matter what platform you use, you'll find apps that only need to be bought once.