Apple and App Developers Sued Over Sharing User Information With Advertisers - MacRumors
Skip to Content

Apple and App Developers Sued Over Sharing User Information With Advertisers

115323 ios 4 lock

Bloomberg reports that Apple and a number of App Store developers have been sued over the sharing of personal information with advertisers working through apps installed on the iPhone and iPad.

The complaint, which seeks class action, or group, status, was filed on Dec. 23 in federal court in San Jose, California. The suit claims Cupertino, California-based Apple's iPhones and iPads are encoded with identifying devices that allow advertising networks to track what applications users download, how frequently they're used and for how long.

"Some apps are also selling additional information to ad networks, including users' location, age, gender, income, ethnicity, sexual orientation and political views," according to the suit.

Along with Apple, developers behind such apps as Pandora Radio, Paper Toss, The Weather Channel, and Dictionary.com have also been targeted with the suit.

In particular, the companies are accused of sharing Unique Device Identifiers (UDIDs) for users' devices. As suggested by their name, these UDIDs are unique to each device, can not be changed, and transmission of them back to Apple or developers can not be blocked by users.

For its part, Apple notes that it screens all App Store applications to make sure that personal information is not transmitted from users' devices without their express permission, although such information may be able to be passed along to ad networks.

It is unclear whether the lawsuit is targeting a legitimate privacy issue or if it's simply objecting to the typical non-identifiable demographic information used by advertisers in targeting their content. While the UDID does not specifically identify any given user, tying any anonymized personal data to that fixed identifier is viewed as a risk by some privacy advocates.

An investigation by The Wall Street Journal published earlier this month hyped the ability of iPhone and Android applications to transmit such personal data, and it is possible that the new lawsuit was inspired by that report.

Related Forum: iPhone

Popular Stories

Dynamic Island iPhone 18 Pro Feature

11 Reasons to Wait for the iPhone 18 Pro

Monday May 11, 2026 9:01 am PDT by
We're only four months out from the launch of Apple's premium next-generation smartphone lineup, and while we're not expecting a sea change in terms of functionality, there are still several enhancements rumored to be coming to the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth noting is that Apple is reportedly planning a major change to its iPhone release cycle this year, adopting a...
iOS 26

iOS 26.5 Features: Everything New in iOS 26.5

Monday May 11, 2026 5:09 pm PDT by
Apple released iOS 26.5 after a few months of beta testing, and while it doesn't have the Siri features we were hoping for since those are being held until iOS 27, there are a handful of useful changes worth knowing about. Subscribe to the MacRumors YouTube channel for more videos. End-to-End Encryption for RCS Support for end-to-end encryption (E2EE) for RCS messages between iPhone and...
General Apps Reddit Feature

Reddit Starts Blocking Mobile Website, Pushing Users to App Instead

Monday May 11, 2026 6:10 am PDT by
Social network Reddit recently began blocking mobile visitors to its website while pushing them to download the official Reddit app, and it's fair to say that the move is not going down well with users. If you visit reddit.com on your iPhone today, you may see a new popup that can't be dismissed, asking you to "get the app to keep using Reddit." A Reddit spokesperson told Ars Technica...