Apple Developers Required to Justify Use of Some APIs in Latest Move to Boost Privacy

In an effort to bolster user privacy, developers will need to justify their use of certain Apple APIs before their apps can be listed on the App Store, according to a new article on the Apple developer website spotted by 9to5Mac.

iOS App Store General Feature Desaturated
The Apple Developer website now lists some APIs as "Required Reason APIs," meaning that developers have to clarify why they are using them in their privacy manifest. Some commonly used APIs, such as UserDefaults, which stores user preferences, now fall under the Required Reason category.

With the launch of watchOS 10, iOS 17, iPadOS 17, tvOS 17, and macOS Sonoma later this year, developers will receive a warning if they submit apps using a Required Reason API without specifying its usage. From spring 2024, any apps using these APIs without a legitimate justification will be rejected in the review process.

Apple explains that main reason for this change is to curb fingerprinting, a method used to track users across different apps and websites. Fingerprinting uses API calls to gather details about a user's device, such as screen resolution, model, and operating system. This data is then used to create a unique "fingerprint," enabling the user to be identified across various apps or websites.

According to Apple, Required Reason APIs will guarantee that apps only employ these APIs for their prescribed use. In the event of a rejection, Apple will permit developers to contest the decision and submit a request for approval if their case does not fit within the existing guidelines. See the Apple Developer website for more information.

Popular Stories

iOS 18

iOS 18.4 Will Include These New Features for Your iPhone

Wednesday February 5, 2025 7:15 am PST by
iOS 18.3 was released last month, so the first iOS 18.4 beta should be coming soon. iOS 18.4 is expected to be a more substantial update for the iPhone, with several new features and changes related to Apple Intelligence and beyond. Apple's website suggests that iOS 18.4 will be released in April, following beta testing. Below, we outline what to expect from the update so far. Apple...
iCloud General Feature Redux

iPhone Users Who Pay for iCloud Storage Receive an All-New Perk

Thursday February 6, 2025 11:21 am PST by
If you pay for iCloud storage on your iPhone, Apple has a new perk for you, at no additional cost. iCloud+ is the official name for Apple's paid iCloud storage plans, which range from 50GB for $0.99 per month to 12TB for $59.99 per month in the United States. iCloud+ plans already come with multiple perks for free, such as Hide My Email and HomeKit Secure Video, and now there is another one...
maxresdefault

An Apple TV Refresh is Coming in 2025 - Here's What You Should Know

Wednesday February 5, 2025 10:17 am PST by
Apple hasn't refreshed the Apple TV since 2022, but rumors suggest that we're finally going to get an update in 2025. We don't have a full picture of what to expect yet, but we have some hints on what's coming. Subscribe to the MacRumors YouTube channel for more videos. Updated A-Series Chip The current Apple TV 4K uses the A15 Bionic chip that was in the iPhone 13 lineup, and it's time for...
iPhone SE 4 Single Camera Thumb

iPhone SE 4 Launching as Soon as Next Week

Thursday February 6, 2025 3:30 pm PST by
Apple's next-generation iPhone SE could debut as soon as next week with a launch to follow later in February, reports Bloomberg's Mark Gurman. Apple isn't expected to hold an event for the iPhone SE 4, and will instead unveil the device through a press release. The iPhone SE 4 is expected to have an iPhone 14-style design, with Apple eliminating the thick bezels and Touch ID Home button of...
iOS 18

iOS 18.3.1 Update Coming Soon for iPhones

Thursday February 6, 2025 7:31 am PST by
Apple is internally testing iOS 18.3.1 for iPhones, according to our website's analytics logs, which have been a consistently reliable indicator of upcoming iOS versions. The software update should be released within the next few weeks. iOS 18.3.1 should be a minor update that addresses software bugs and/or security vulnerabilities. Apple Intelligence notification summaries for news and...
iCloud General Feature Redux

Apple Ordered by UK to Create Global iCloud Encryption Backdoor

Friday February 7, 2025 2:37 am PST by
The British government has secretly demanded that Apple give it blanket access to all encrypted user content uploaded to the cloud, reports The Washington Post. The undisclosed order is said to have been issued last month, and requires that Apple creates a back door that allows UK security officials unencumbered access to encrypted user data worldwide – an unprecedented demand not before...
disney

Disney+ Loses 700,000 Subscribers Following Price Increase

Wednesday February 5, 2025 3:34 pm PST by
Disney+ lost 700,000 subscribers worldwide in recent months, according to Disney's earnings results for the first quarter of 2025. Disney said it now has 124.6 million Disney+ subscribers, a decrease of 0.7 million compared to its subscriber numbers in the fourth quarter of 2024. The drop in subscribers comes after Disney+ prices increased in the fall. Disney+ with Ads went from $7.99 to...
apple wallet drivers license feature iPhone 15 pro

iPhone Driver's Licenses to Expand to These 7 U.S. States

Wednesday February 5, 2025 6:27 am PST by
In select U.S. states, residents can add their driver's license or state ID to the Wallet app on the iPhone and Apple Watch, providing a convenient and contactless way to display proof of identity or age at select airports and businesses, and in select apps. Below, we outline which U.S. states and territories offer the feature, and additional states that have committed to rolling it out in...

Top Rated Comments

fatTribble Avatar
20 months ago
I applaud efforts like these from Apple. Anything to enhance privacy for end users is a win in my book. ???
Score: 29 Votes (Like | Disagree)
George Bailey Avatar
20 months ago

As a developer I can't tell you how much of a pain this is going to be.
As a developer I don't see this being much of a hindrance. I already justify my code by writing comments.

I can't really see someone thinking "Wait, I have to justify my code? That's outrageous!"
Score: 27 Votes (Like | Disagree)
dominiongamma Avatar
20 months ago

As a developer I don't see this being much of a hindrance. I already justify my code by writing comments.

I can't really see someone thinking "Wait, I have to justify my code? That's outrageous!"
I like your attitude towards it, instead of “oh it’s going to be a pain” which gives me little faith in a developer to protect my privacy because it’s too inconvenient for them
Score: 25 Votes (Like | Disagree)
Zc456 Avatar
20 months ago
I can already hear Zuck yelling in frustration from within Facebook HQ.
Score: 22 Votes (Like | Disagree)
fatTribble Avatar
20 months ago

Good for privacy reason, however how much apps will slip through QC and checks? Many stories how fraudulent apps slipped through. The Apple App Store was once the example of quality apps compared to it's Android counterpart. Now it just feels like Android Junk.
Any gaps in QC can be improved over time. Because they potentially don’t catch everything doesn’t mean they should just give up.
Score: 14 Votes (Like | Disagree)
zahuh Avatar
20 months ago
As a developer I can't tell you how much of a pain this is going to be. As a consumer, it's not going to stop me from downloading an app but I guess good to know.
Score: 13 Votes (Like | Disagree)