The details available on the App Store show that Facebook Messenger is the most acquisitive when it comes to user data collection, followed by WhatsApp. The list of data both apps collect includes users' purchase history, financial information, location details, contacts, phone number, email address, and usage data, among others.
You can see these details on the App Store yourself if you have an iPhone. Here's a detailed breakdown of all the data that these apps collect.
Facebook criticised Apple's privacy labels in newspaper advertisements shortly after they started appearing on the App Store last month. WhatsApp also separately accused Apple of implementing anti-competitive policies over the recent update. The app also provided some clarification on its user data collection through an FAQ. However, the list shared online suggests the reason for criticism and accusation.
It is important to point out that the privacy labels on the App Store are based on the self-submission made by developers to Apple that is not yet manually checked. But nonetheless, companies including Facebook also provide such details in their lengthy privacy policies as well that aren't read by a large number of their users.
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