As of January 2025, around 13.7 percent of paid iOS apps admitted collecting data from users engaging with their mobile products. In comparison, approximately 53 percent of free-to-download iOS apps reported they collect private data from users worldwide, while approximately 86 percent of paid apps have not declared whether they collect users' privacy data.
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Everything on "App tracking and mobile privacy" in one document: edited and divided into chapters, including detailed references.
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Overview
Apple App Store metrics
Performance
iOS app publishers and developers
Software development kits (SDKs)
Data collection
App Store content removal
Spotlight: App Store Optimization (ASO)
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