Apple is facing a £2 billion ($2.7 billion) lawsuit in the United Kingdom over App Tracking Transparency, with app developers alleging that the privacy framework unfairly favors Apple’s own services and advertising business.
Reuters reported that the case was filed at London’s Competition Appeal Tribunal on behalf of app developers and accuses Apple of imposing greater tracking restrictions on third parties than on itself. The lawsuit follows several years of regulatory attention surrounding the tracking feature, which Apple introduced in 2021.
Engadget likewise reported that the claim argues Apple’s rules are stricter on external developers than on Apple’s own services, potentially giving the company’s advertising ecosystem a competitive advantage.
App Tracking Transparency sits at the center of the case
Apple introduced App Tracking Transparency, or ATT, to give iPhone and iPad users greater control over whether apps can follow their activity across other companies’ apps and websites.
Reuters reported that Apple describes ATT as a way to let users decide whether apps receive permission to track their activity. Apple rejected the allegation that it gives itself preferential treatment, saying it is “bound by the exact same requirements as all developers.”
The lawsuit is being led by Ann Pope, a former senior official at Britain’s Competition and Markets Authority. Reuters quoted Pope as saying Apple’s policy caused “very significant harm to businesses that depend on Apple as a gatekeeper”. She said the action aims to ensure fair rules and compensate British businesses for alleged losses.
European regulators are already examining ATT
The UK lawsuit is not an isolated challenge.
Regulators in France, Italy, Poland and Germany have scrutinized Apple’s tracking framework. In Germany, Apple agreed last month to change rules governing how developers can use personal data for targeted advertising after competition concerns.
Germany’s Federal Cartel Office had concluded Apple was favoring its own apps over third-party developers. Publishers, advertisers, developers and Meta have also criticized ATT because their business models depend heavily on advertising measurement and tracking.
Privacy controls are becoming a platform competition issue
For developers, the dispute illustrates why privacy architecture can have consequences far beyond data protection.
ATT changes how third-party apps obtain permission to track users, which directly affects advertising attribution, targeting and monetization. If a platform operator applies those restrictions differently across its own products and competing services, privacy engineering can become an antitrust question.
That is the larger issue behind the £2 billion claim. Apple argues ATT gives users clearer control over tracking, while challengers contend the implementation can reshape competitive conditions inside the App Store ecosystem.
For founders building advertising-supported apps, the outcome could therefore matter as much as any individual privacy rule. Platform-level decisions about permissions, identifiers and data access increasingly determine not only how products protect users, but also which businesses can compete effectively on top of them.
